A Systematic Review of “Helicopter Parenting” and Its Relationship With Anxiety and Depression

Authors: Julia Schønning Vigdal, Kolbjørn Kallesten Brønnick

Abstract

Background

Emerging evidence suggests that overprotective and controlling parenting, often referred to as “helicopter parenting” may have negative implications on the child's mental health such as anxiety and depression. However, no systematic review on the topic exists.

Objective

Conducting a systematic review to identify all studies where the relationship between helicopter parenting and symptoms of anxiety and/or depression have been investigated.

Method

A systematic literature search conducted the 3rd of November 2021 yielded 38 eligible studies. Since helicopter parenting is a fairly new construct, this review considered parental control and overprotective parenting to be dimensions of helicopter parenting and thus, eligible for the study. Study quality was assessed in accordance with Campbells Validity Typology.

Results

The majority of the studies included in this review found a direct relationship between helicopter parenting and symptoms of anxiety and depression. However, validity problems undermine these findings with regarding to assessing the causal relationship between helicopter parenting and these symptoms. There were no longitudinal studies of sufficient quality to determine if helicopter parenting precedes the outcome of anxiety and depression.

Conclusion

Even though the majority of the studies included in this systematic review found a relationship between helicopter parenting and anxiety and depression, the evidence for this relationship is insufficient and must be investigated further. Findings suggest that it is important to include both maternal and paternal parenting style in future studies as they could affect the outcome of anxiety and depression differently.

Systematic Review Registration

PROSPERO 2020 CRD42020167465, https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=167465.

Introduction

A parenting style characterized by overprotection and control is often referred to as “helicopter parenting” (LeMoyne and Buchanan, 2011; Padilla-Walker and Nelson, 2012; Schiffrin et al., 2014). It has been argued that such overprotective parenting started rising around 1985 due to several factors, amongst them the creation of the parent-supervised and scheduled play-date (Lythcott-Haims, 2015). A study using a nationally representative sample of more than 3600 Americans suggested that child-centered, time-intensive parenting has now become a cultural norm and is pervasive, even across different social classes (Ishizuka, 2019). It has also been argued that such intensive parenting is prevalent on a global scale (Anderson, 2019) and has harmful effects such as an increase in depression (Schiffrin et al., 2014) and anxiety (Spokas and Heimberg, 2009). Thus, helicopter parenting is an important modifiable risk factor with regard to mental health.

A parenting style can be conceptualized as a collection of a parents' attitudes and behaviors communicated toward their children. These attitudes and behaviors create a certain type of emotional climate for the children to live in. In sum then, a parenting style is the expression of strategies that a parent employ in their child rearing (Darling and Steinberg, 1993). This review defines helicopter parenting as a parenting style in which the parent expresses behaviors of overprotectiveness toward the child in a controlling manner. Thereby, also communicating the attitude that the child is lacking in self-care competence and thus needs to be overly protected. The term “helicopter parenting” was first coined in 1990 (Cline and Fay, 2020) to illustrate how parents metaphorically may hover over their children, like helicopters, ready to sweep in and rescue their children from disappointments and painful experiences (Cline and Fay, 2020). Arguably, by doing so they are sending the message to their children that they are incapable of overcoming their own struggles and in need of constant protection from the dangers of the world.

Researchers have consistently argued for the importance of parenting on child development and mental health into adulthood (Belsky, 1984; Gutman and Feinstein, 2010; Waller et al., 2013; Masud et al., 2015). Emerging evidence suggests that helicopter parenting may possibly lead to increased anxiety (Spokas and Heimberg, 2009; Segrin et al., 2013), depression (Schiffrin et al., 2014), prescribed medication and increased recreational consumption of pain pills (LeMoyne and Buchanan, 2011). In addition, helicopter parenting has been linked to a decrease in wellbeing (Schiffrin et al., 2014), self-regulation (Perry et al., 2018), self-efficacy (Reed et al., 2016) and poorer academic outcomes (Schiffrin and Liss, 2017; Luebbe et al., 2018).

The consequences may be dire for the individual themselves, and also when examined on a societal level, helicopter parenting can have serious consequences (Nutt, 2018). Data from the National Survey of Children's Health (ages 6–17 years old) show a 20% increase in diagnosed anxiety between 2007 and 2012 (Nutt, 2018). Twenge et al. (2019) conducted a longitudinal study with a nationally representative sample of US adolescents to investigate trends in mood disorders since the mid-2000. They found a 63% increase in depression from 2009 to 2017 and a 71% increase in reported psychological distress from 2008 to 2017 (ages 18–25). These figures suggest an usually large increase of anxiety and depression in a short period of time. The same trend also applies to students in higher education with the emergency calls to counseling in universities doubling over a 5 year period (Gray, 2015). Thus, this rapid rise in rates of anxiety and depression may mark a major generational change (Haidt and Lukianoff, 2018).

Humans need to encounter physical and mental challenges in order to develop resilience (Haidt and Lukianoff, 2018). Seery et al. (2010) found that that individuals whom had experienced a moderate amount of adversity had better mental health as opposed to those whom had no such experience, or too much experience with hardship. Additionally, those with a moderate experience of adversity not only reported having better mental health, but they were also less likely to be affected by a recent adverse event (Seery et al., 2010). The restriction of exposure to challenges by intervening before a child has struggled or failed undermines the child's effort to establish healthy regulatory strategies (Perry et al., 2018). Consequently, there are fewer regulatory strategies to be called upon when the child is without caregiver assistance (Perry et al., 2018). Thus, it would seem that helicopter parenting could be related to the outcome of anxiety and depression as the goal for helicopter parents is to ensure a life without struggles and suffering for their children (Cline and Fay, 2020). This perfect and pain-free life that helicopter parents strive for is counterproductive since it robs children from experiencing competence and autonomy (Haidt and Lukianoff, 2018; Cline and Fay, 2020).

Self-determination theory supports the idea that helicopter parenting can be harmful. Ryan and Deci (2000) outline three basic needs that are innate in us all. If satisfied, these needs promotes health and wellbeing, but a violation of these needs contributes to pathology and ill-being. The first of these needs is the need for autonomy; feeling like one is free to make one's own choices. Secondly, there is the need for competence, feeling confident in one's abilities and accomplishments. Lastly, is the need of relatedness; feeling that one is part of a genuinely caring relationships (Ryan and Deci, 2000). The self-determination theory argues that an individual cannot thrive without all of these being fulfilled, to the same degree that one cannot thrive with water and not food (Ryan and Deci, 2000). Helicopter parents who are over-controlling could reduce the sense of autonomy and competence in the child, which could again undermine their relationship with their child. Thus, helicopter parenting might violate all the three basic needs of the child.

Different phases of childhood, from infancy to adolescence, require specific levels of protection and control to promote optimal developmental outcomes (Santrock, 2019). Children need a certain level of parental control to learn how to be an effective member of society, but they also need autonomy to develop competence and self-sufficiency (Barber et al., 1994). Parents must continuingly navigate between these polarities to ensure that the most appropriate style of parenting is being applied. Adolescence on the other hand is a period characterized by an increased development of independence (Szwedo et al., 2017). Thus, the tension between how much autonomy to give and how much control to assert becomes much more apparent. Additionally, the transition to adulthood has changed drastically in just a few decades where many young adults now find themselves still living at home whilst unattached romantically (Schneider et al., 2016). Thereby, potentially continuing the violation of the crucial needs of autonomy, relatedness, and competence.

By violating these needs helicopter parents could foster anxiety and depression. Self-efficacy refers to an individual's belief in their ability to persevere in face of difficulties (Bandura, 2010). A low sense of efficacy to exercise control over that which one values can give rise to feelings of futility in several ways, for instance through unfulfilled aspirations (Bandura, 2010). Depression is most likely to arise when personal standards of merit are set well above one's perceived efficacy to attain them (Kanfer and Zeiss, 1983; Bandura et al., 1999). Another factor contributing to depression is the exercise of control over the depressing thoughts themselves (Bandura et al., 1999). Couple this with the tendency helicopter parents have to set unobtainable standards for their children in the endeavor to create an image of perfection for the outside world, and it could be argued that parents reinforce this sense of inadequacy (Cline and Fay, 2020). Therefore, when helicopter parenting is combined with a child's feeling of inefficacy, their chance of experiencing depression increases. Likewise, there is a growing body of empirical support for the theory that lowered child perceived competence is related to higher levels of anxiety (Muris et al., 2003; Teachman and Allen, 2007). If an individual ceases to believe that they can contribute adequately by their actions to reach a desired outcome they will, arguably, have little reason to persevere in the face of the challenges they meet (Bandura, 2010). Thus, a low sense of self-efficacy could also increase anxiety, with challenges perceived as a potential threats. If an individual has a low sense of self-efficacy in addition to parents who reinforce this sense of danger by overprotectiveness, it would only be logical to assume that this could increase anxiety levels even more.

Given the context of increasing levels of anxiety and depression on a societal scale, we need more knowledge about the specific role of helicopter parenting in promoting increasing levels of anxiety and depression. One unresolved issue concerns direction of does helicopter parenting cause maladjustment, or is it rather a parental reaction to child maladjustment in the context of a changed society which may have imposed increased demands on developing children and adolescents? Despite the attention this parenting style is receiving internationally, no systematic review has been conducted on the relationship between helicopter parenting and anxiety and depression. The aim of this study is therefore to identify and assess all studies after 1985 where the relationship between helicopter parenting and anxiety or depression have been investigated. To do so sufficiently the research question has been designed in lines with the PICO(S) framework, an acronym standing for patient/population, intervention, comparison, outcome, and study design (Santos et al., 2007). This study is thereby covering a crucial research gap in the literature. Additionally, this study aims to investigate the validity of the included studies, especially with regard to causation. Cross-sectional studies cannot establish the direction of effect. To establish this relationship one must examine whether the cause preceded the effect and if they are related, i.e., they covary (Shadish et al., 2002). It is therefore of interest to see how well we understand the potential relationship between helicopter parenting and symptoms of anxiety and depression.

Methods

This systematic review follows the guidelines of PRISMA: Preferred Reporting Items for Systematic Review and Meta-Analysis (Moher et al., 2010).

Protocol and Registration

Methods of the analysis and inclusion criteria were specified in advanced and documented in a protocol. We modified the protocol during the review regarding inclusion-criteria, as we found that including a pre-adolescent population led to heterogeneity that detracted from the coherence of the review.

Eligibility Criteria

The eligibility criteria was developed in accordance to the PICO(S) framework, see Table 1 (Santos et al., 2007). For the updated search a few adjustments were made to the eligibility criteria's, the original eligibility criterias can be found in the protocol registered in PROSPERO. Quantitative studies which investigated the relationship between helicopter parenting and anxiety and/or depression were included in the review. This review defines helicopter parenting as a parenting style in which the parent communicates an attitude of overprotectiveness toward the child in a controlling manner. As helicopter parenting is a fairly new term (Padilla-Walker and Nelson, 2012) studies which investigated the overprotective or controlling dimension of helicopter parenting were also included. Since this review is focused on the outcome of anxiety and depression, to be included in the review the studies would have to have a valid and separate measurement of one or both of these outcomes. Studies in which helicopter parenting was a moderator rather than a predictor of the outcome of anxiety or depression were not included. Studies with a restricted, selective sample focusing on a somatic disease, were not eligible to be considered in this review. Adolescence is a period characterized by development of independence (Szwedo et al., 2017) and in adolescence depression and anxiety starts to be expressed in the same way as in adults (Keijsers and Poulin, 2013). Therefore, this review focused on participants whom were in adolescence or older as including pre-adolescent children would introduce heterogenity regarding antecedents and consequential outcomes. Studies in which the participants were younger than 10 years old were not included as adolescence begins at year 10 (World Health Organization, 2021). Additionally, studies employing an experimental design were excluded as this review is concerned with the actual parenting and the anxious or depressive behavior it may cause. Experimentally manipulating parenting behavior in this instance would reduce ecological validity if this lead to the parent suddenly acting in an uncommon and unexpected manner. Studies where parental psychopathology was an area of focus were not included. Studies with the aim to validate questionnaires concerning helicopter parenting will also be included in the review. Due to the fact that it has been argued that a major shift in parental involvement happened in 1985, studies conducted before then were not considered (Lythcott-Haims, 2015). Only articles written in English were included.

Information Sources

An explorative literature search to discover the best search terms was conducted the 5th of August 2019 in the electronical databases of PubMed and PsychINFO. The actual search used in this review was conducted the 8th of August 2019 in the same electronical databases. The search was updated the 3rd of November 2021.

Search

The electronic database PsychINFO and PubMed were searched using the search terms (“overprotective parent^^” OR “helicopter parent^^” OR “controlling parent^^”) AND (parenting^^ OR “parenting style^^”) AND (anxiety OR depression OR “clinical diagnosis^^”). The limit of publication year from 1985 to the 8th of August 2019 was added. Additional sources were searched for in the reference lists of the selected studies between September and October 2019. The search was updated the 3rd of November 2021 both in PsychINFO, PubMED as well as potential other references.

Study Selection

The studies detected in the literature search were imported into EndNote where the screening process ensued. First off, any duplicates where removed. Following this, the titles and abstracts of the studies were scoured through and applied to the eligibility criteria. Studies which were deemed ineligible were removed. This was done by one reviewer, however if that reviewer felt uncertain another reviewer was contacted to discuss whether that particular study was eligible or not. After screening the studies by their titles and abstracts the first reviewer read through all the studies in full text to further confirm eligibility. Following this the first reviewer looked for additional sources by scouring the reference list of the full text studies, including those that met the eligibility criteria and that where not already included. To increase the strength of the review the two reviewers met to go through each full text study collectively. Those studies that which were deemed ineligible in this meeting were excluded and listed with reason for their exclusion.

Data Extraction

One review author extracted the data into a chart in Excel specifically designed for this study.

Data Items

Information extracted from each included study (1) author, (2) year, (3) title of study, (4) country of origin, (5) purpose of the study, (6) sample, (7) recruitment, (8) recruitment, (9) sample size, (10) age group, (11) study design, (12) measurement, (13) main findings related to helicopter parenting and anxiety/depression, (14) conclusion.

Validity of Individual Studies

One reviewer assessed the validity of the eligible studies according to Campbell's Validity Typology which considers four different types of validity; internal validity, external validity, statistical conclusion validity and construct validity (Shadish et al., 2002). After the first reviewer had determined the quality of the studies the assessments were discussed with the second reviewer so that consensus regarding the validity could be reached.

Planned Analyses

Since this review is synthesizing primary studies with the objective to understand the relationship between helicopter parenting and anxiety and depression the synthesis will be that of a narrative nature. The validity of the studies included will also be synthesized in a narrative description.

Results

**Study ** As is illustrated in the PRISMA flow diagram (see Figure 1), 202 studies were identified through the electronic searches in the databases of PsychINFO and Pubmed. In addition, 34 studies were identified for possible inclusion from hand searching through possible studies' references. Duplicates were removed before any further screening procedure, leaving 196 abstracts and titles to be screened according to the eligibility criteria. This resulted in 91 studies identified for full-text retrieval. After the application of the eligibility criteria to the full-text studies a total amount of 38 studies were selected to be part of the review. Exclusion after full-text retrieval were due to participants being under the age of 10, parental psychopathology, helicopter parenting being a mediator, no valid measure of anxiety or depression, the sample was ineligible or the study was not peer reviewed (see Figure 1).

**Study ** See Table 2 for a full overview of the study characteristics. The included studies employed a range of different measurements for parenting style and anxiety and depression. In total, 33 cross-sectional studies and 5 longitudinal studies were identified (see Table 2). All 38 studies employed subjective measurements, not researcher observations, for the measurement of helicopter parenting. Thirty-one studies used only child reports and 5 studies used both parent report and child report. The remaining 2 studies employed an additional reporter to the child or parent. A full overview of the different measures used can be found in Table 3.

**Parenting style ** The studies focused on different parenting styles, see Table 4, for details. While 14 studies investigated helicopter parenting as an independent construct, 19 studies focused on the controlling dimension of helicopter parenting and 4 on the overprotective dimension. Additionally, 1 study investigated both the controlling and overprotective dimension. It should be noted that of the studies investigating a controlling parenting style, 3 focused solely upon maternal control (see Table 4). A total amount of 27 studies measured anxiety and 27 measured depression (see Table 4).

Anxiety

**Helicopter parenting and ** 10 studies examined the relationship between helicopter parenting and anxiety. Helicopter parenting was found to have a direct relationship with anxiety in 5 of the studies (Kouros et al., 2017; Luebbe et al., 2018; Cui et al., 2019; Hong and Cui, 2019; Schiffrin et al., 2019). However, in the remaining 5 studies there was no direct relationship between helicopter parenting and anxiety (Segrin et al., 2013; Schiffrin et al., 2014; Reed et al., 2016; Darlow et al., 2017; Wenze et al., 2019).

**Controlling parenting and ** A direct effect of controlling parenting with regard to increased anxiety was found in 11 of 12 studies that investigated the relationship between parental control and anxiety (Silove et al., 1991; Luis et al., 2008; Reitman and Asseff, 2010; Inguglia et al., 2016; Goger et al., 2020; Klein et al., 2020; Kullberg et al., 2020, 2021; Levitt et al., 2020; Rogers et al., 2020; Basili et al., 2021), whilst 1 did not (Cai and Tu, 2020). The only study that focused solely on maternal control and the outcome of anxiety did not find a relationship between the two variables (Cai and Tu, 2020).

**Overprotective parenting and ** No studies found reduced anxiety following overprotective parenting (Lieb et al., 2000; Overbeek et al., 2007; Heider et al., 2008; Knappe et al., 2012).

Overprotective and controlling parenting and Lastly, there were 1 study that examined both the controlling and overprotective dimension of helicopter parenting simultaneously. This study found a relationship with anxiety (Wu et al., 2018).

Depression

**Helicopter parenting and ** Nine of 11 studies investigating the relationship between helicopter parenting and depression, found an effect (Schiffrin et al., 2014, 2019; Darlow et al., 2017; Luebbe et al., 2018; Reilly and Semkovska, 2018; Cui et al., 2019; Hong and Cui, 2019; Moilanen and Lynn Manuel, 2019; Turner et al., 2020), whilst 2 did not (Reed et al., 2016; Wenze et al., 2019).

**Controlling parenting and ** 13 of 15 studies found a relationship between parental control and depression (Finkenauer et al., 2005; Mandara and Pikes, 2008; Soenens et al., 2012; Cui et al., 2014; Gargurevich and Soenens, 2016; Inguglia et al., 2016; Cai and Tu, 2020; Cho et al., 2020; Klein et al., 2020; Levitt et al., 2020; Rogers et al., 2020; Basili et al., 2021; Kullberg et al., 2021). The remaining 2 studies did not find a relationship (Finkelstein et al., 2001; Kullberg et al., 2020). In addition, 2 studies focused solely on maternal control, and both found a relationship with depression (Mandara and Pikes, 2008; Cho et al., 2020).

**Overprotective parenting and ** Overbeek et al. (2007) found a relationship between overprotective parenting and depression.

Validity Assessment

Each individual study was assessed in accordance with Campbell's Validity Typology considering internal validity, statistical conclusion validity, construct validity as well as external validity (Shadish et al., 2002). Campbell's Validity Typology was chosen as it allows for more a more flexible validity assessment than that of other formal frameworks. This flexibility is particularly useful in a narrative synthesis such as this. A full overview of the validity assessment has been provided as Supplementary Materials. The basic assumption is that there is a casual link between helicopter parenting and the child outcomes of anxiety and depression. To establish this relationship one must examine whether the cause preceded the effect and if they are related, i.e., they covary (Shadish et al., 2002). Additionally, there cannot be any plausible alternative explanations for the effect. Thus, to investigate the relationship between helicopter parenting and anxiety and depression sufficiently, a longitudinal study, with validated measurements, must be conducted, as cross-sectional designs cannot establish the direction of the causal relationship. Out of the 38 included studies only 5 studies were longitudinal with 3 finding a relationship between parenting style and anxiety (Overbeek et al., 2007; Knappe et al., 2012; Rogers et al., 2020) and 2 finding a relationship with both and anxiety and depression (Overbeek et al., 2007; Rogers et al., 2020). Of the longitudinal studies 2 of them found no relationship with anxiety but did detect a relationship between parenting style and depression (Cai and Tu, 2020; Basili et al., 2021).

When evaluating the validity of each of these studies several risks of bias and validity threats were detected, which shall be mentioned briefly. Three studies only used child self-report, thereby exposing their study to the risk of mono-method bias and response bias (Overbeek et al., 2007; Knappe et al., 2012; Rogers et al., 2020). Cai and Tu (2020) only tested adolescent boys and their mothers, thus, their findings cannot be seen in context to family dynamic as a whole. One of the longitudinal studies, in particular, may be vulnerable to inflated risk of type 1 error due to multiple comparisons as they included 11 formal diagnoses for mental disorders in their analysis (Overbeek et al., 2007). Additionally, the parenting behavior only predicted the variance in mental health by a small amount (Overbeek et al., 2007). Regarding the study by Basili et al. (2021) the findings must be interpreted with caution as they found parental control to predict lower levels of depression, a surprising finding not supported by other studies. The assessment of each individual study can be found in more detail the Supplementary Materials provided.

Through this quality assessment, the study by Rogers et al. (2020) emerged as one of the strongest in terms of validity. This study takes into consideration the whole family dynamic in relation to controlling parenting and the potential outcome of anxiety and depression. Instead of only considering maternal, paternal, or not specifying which parent to keep in mind, these 500 adolescents reported on experienced maternal and parental control separately consistently from the age of 12 to 19. Thus, offering a deeper insight in the changing dynamics in the family across adolescence. The study found the majority of adolescents to report low but increasing levels of parent's psychological control across their second decade. The minority, however, who experience a stable and elevated level of controlling parenting also reported higher levels of symptoms of anxiety and depression. Cohen's d was calculated for maternal and paternal control to estimate the effect size on anxiety and depression. The effect size for both maternal control (.34) and parental control (.06) were found to be small in relation to reported depression. However, the effect size of maternal control (1.05) and parental control (0.8) were big in terms of reported adolescent anxiety.

Discussion

The aim of this systematic review was to investigate helicopter parenting and its relationship with symptoms of anxiety and depression. Since helicopter parenting is a fairly new construct, this review considered parental control and overprotective parenting to be dimensions of helicopter parenting and thus, eligible for the study. The studies included in the review focused mostly on parental control, helicopter parenting and overprotective parenting, respectively. The majority of the studies revealed a relationship between helicopter parenting and anxiety and/or depression. However, issues with the validity of the findings were found and thus precluding firm conclusions regarding putative causal relationships as well as highlighting problems with self-report measurements of helicopter parenting.

A clear majority of the studies included in this review found a direct positive relationship between helicopter parenting and symptoms of anxiety and depression, with one exception (Basili et al., 2021) finding a negative association. Thus, the bulk of the studies suggest that parents behaving in an overprotective and controlling manner negatively affect their child's mental health. This relationship was detected in both adolescents and adults. Hence, helicopter parenting could have lifelong effects on an individual's anxiety and depression levels. Helicopter parenting was found to have a relationship with anxiety and/or depression in the US, Europe, Asia as well as South America, suggesting that this relationship goes beyond ethnicity and culture and supports the notion of helicopter parenting being a global phenomenon (Anderson, 2019). The implications of this research is vast. The findings of this systematic review have closed a gap in the research literature and provided future researchers with an overview of the evidence for the relationship between helicopter parenting and anxiety and depression. In addition, the findings of this review have detected helicopter parenting as a modifiable risk factor for anxiety and depression. It could be of use in the development of parenting interventions or to give health care professionals working with struggling families an insight in the nature of how a helicopter parenting can affect a child's mental health.

However, there are underlying issues with the validity of the studies included in this review. Firstly, one cannot establish a causal relationship unless it can be determined that the cause preceded the effect (Shadish et al., 2002). If we are to know that helicopter parenting causes anxiety or depression, we must determine that the helicopter parenting started before the manifestation of anxiety and depression. Although, the majority of the studies included in this review found a relationship with either anxiety or depression, most of the studies were cross-sectional. The cross-sectional study design is unable to address the direction of the effect (Shadish et al., 2002), hence internal validity is low. We can therefore not know with certainty if anxiety and depression causes helicopter parenting or if anxiety and depression in a child causes parents to act in lines with the helicopter parenting style. If we are to fully elucidate this relationship we need to employ a longitudinal study design. Out of few the longitudinal studies in this review all detected a relationship between helicopter parenting and either anxiety, depression or both.

Secondly, there is the issue of how helicopter parenting is measured. The most employed measures were subjective self-report measures, either from the parent themselves or from the child. The validity of parental self-report has been questioned (Holden, 2001; Locke and Prinz, 2002; Perepletchikova and Kazdin, 2004). In general, self-report measures are prone to bias and any results should be interpreted tentatively (Shadish et al., 2002). Self-report measures are dependent on the honesty of the respondents, but even if every respondent aimed to answer every item honestly, their introspective abilities could be lacking or they could be affected by common cognitive biases. People have been found to interpret and use the scales presented to them differently possibly producing different scores between participants reflecting something other than what the questionnaire was created to measure (Austin et al., 1998). Maybe especially so in anxiety research as people whom are high in anxiety have a tendency to be more extreme in their responses utilizing the endpoints of the scale more compared to those who hang around the midpoints (Lewis and Taylor, 1955; Austin et al., 1998). Despite this, several of the studies in this review chose to utilize self-report as the only measurement for all their variables. Thus, possibly causing monomethod bias where by the presenting everything in the same manner to the respondent could influence the results in and of itself (Shadish et al., 2002).

Additionally, parenting constructs have particular elements that are vulnerable to the distortion inherent in self-report (Morsbach and Prinz, 2006). Many parenting items can be considered highly sensitive in nature which strengthens the chance that parents attempt to present their own parenting in a way that are more socially desirable rather than choosing the response reflective of their true behavior (Tourangeau et al., 2000). It is a cognitively difficult task to make estimates of potentially high-frequency behavior, such as conversations had with child, over longer periods of time which in turn could lead to less precise estimations of their behavior (Tourangeau et al., 2000). There is also an uncertainty to the degree of consensus in the general population about the interpretations of certain parenting items, such as time-out (Clayman and Wissow, 2004). These factors might be why parents have been found to recall their parenting practice in lines of expert recommendations, even though it is inaccurate for their own practices (Robbins, 1963).

Following the inaccuracy parental self-report has on reality one could argue that it might be better to have the child report on the parenting style of their parents by retrospective recall. However, our memories are not accurate snapshots of the past, rather, they are constructions and must be understood as open to influence from the attempts to provide meaning (Schacter et al., 2011) and from the cognitive processes involving our selection and interpretation of elements making up memories (Chess et al., 1966). The validity of retrospective recall on the more subtle aspect of family life and relationships have been found to be less than satisfactory (Taylor and Brown, 1988). This might be because there are some evidence that what people remember could be influenced by their mood state at the time of the retrospective reporting (Bower, 1981; Matt et al., 1992). For instance, depressive mood fosters the recall of unhappy memories whilst inhibiting the recall of happy ones (Bower, 1981; Teasdale, 1983).

The concept of necessary and sufficient conditions for causal inferences can be applied in the endeavor to understand how helicopter parenting is related to anxiety and depression (Brennan, 2017). Research is clear that there are several reasons why one could develop depression, such as faulty mood regulation by the brain, genetic vulnerability and stressful life events (Burns et al., 2002; Bar, 2009). In terms of the causes of anxiety both genetic (Meier et al., 2019), the personality of the individual (Prince et al., 2021) as well as stressful life events could cause anxiety (Miloyan et al., 2018). The answer to the question of necessity is therefore, one need not necessarily be exposed to helicopter parenting to be depressed or anxious. Regarding whether helicopter parenting is a sufficient condition to develop anxiety and depression, this systematic review cannot determine that it is on an individual level. However, since most of the studies did detect a relationship, we cannot rule out the chance that helicopter parenting is a sufficient condition for anxiety and depression but an INUS condition according to Mackie (1965). INUS condition stands for insufficient, but necessary part of an unnecessary but sufficient condition. Mackie (1965) argued that effects, typically, have a plurality of conditional causes. Applying this philosophy to the topic at hand one could say that helicopter parenting could be a INUS condition for those who are already more vulnerable to mood disorders. It might also be that on a societal level, helicopter parenting, is sufficient in creating an environment characterized by heightened focus on dangers and uncertainties that might lead to increased population anxiety and depression.

Despite the issues of validity encountered in the endeavor to answer the question of helicopter parentings effect on anxiety and depression, Rogers et al. (2020) does a good job of it. This longitudinal study found there to be a relationship between controlling parenting and anxiety and depression. However, there were differences in the effect sizes in terms on how each specific parent effected anxiety and depression with maternal control found to have a bigger effect size than parental control. Additionally, although the effect size for both maternal and parental control was found to be quite small regarding its effect on depression, it was much bigger in terms of adolescent anxiety. These findings underline the utmost importance of including the whole family dynamic in future research. It could also be of interest to examine the different expectations adolescents have of their mothers and fathers in the transition to autonomy over their own lives.

One could argue that the question of the nature of the relationship between helicopter parenting and anxiety and depression is still answered somewhat unsatisfactorily. Nevertheless, the paramount importance of understanding it remains. Future research should therefore aim to develop longitudinal studies with higher validity where researchers thoroughly account for other factors that could possibly lead to the manifestation of anxiety and depression. To reduce the chance of bias the methods employed should not be limited to self-report, but also the observation of the actual parenting style, coded by researchers blinded to the hypothesis of the study to reduce researcher expectancy. It would also be helpful for future studies to take possible protective factors, such as self-efficacy, into account to better understand the relationship between helicopter parenting and anxiety and depression.

This review is not without its own limitations. There was only one reviewer undertaking the electronic literature search, consequently, it was decided that only two databases should be searched for eligible studies. It might be that there are some studies covering the topic of helicopter parenting and anxiety and depression in other relevant databases that was not found through this literature search or through scouring the reference lists of the included studies. In addition, there was only one reviewer conducting the initial screening procedure. Even though a second reviewer was contacted when uncertainty arose and the two reviews met to collectively go through the potential studies, it is still a recommendation by PRISMA that at least two separate screenings take place (Liberati et al., 2009). Akin to the other limitations mentioned, the initial quality assessment was completed by one reviewer before it was later discussed with a second reviewer. In addition, this systematic review did not investigate possible age differences in the outcomes of anxiety and depression.

Most of the evidence points in the direction of there being a relationship between helicopter parenting and anxiety and depression. However, issues with validity such as the possible distortion of self-report measures and few robust longitudinal studies undermine most of these findings. Findings suggest that it is important to include both maternal and paternal parenting style in future studies as they could affect the outcome of anxiety and depression differently. In conclusion, even though many of the studies included in this systematic review found a direct effect between helicopter parenting and anxiety and depression, the evidence for the nature of this relationship is insufficient and must be investigated further.

Data Availability Statement

The original contributions presented in the study are included in the article/Supplementary Materials, further inquiries can be directed to the corresponding author/s.

Author Contributions

JV was the first reviewer and conducted the systematic literature review. The records identified were screened firstly by JV and then collectively with KB. JV extracted the data and did the analysis. The findings of the analysis and the quality assessment was discussed with KB to reach a consensus. JV wrote the article, with the guidance of KB. All authors contributed to the article and approved the submitted version.

Funding

Western University of Applied Sciences funded the open access publication fee.

Conflict of Interest

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

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