The scientific legacy of Little Hans and Little Albert: future directions for research on specific phobias in youth

Combining one-session treatment with a homework program including app-based technology to enhance the treatment of childhood specific phobias: A study protocol of a multicenter pragmatic randomized controlled trial

Introduction

Childhood specific phobias are among the most common and earliest onset mental disorders with a lifetime prevalence of more than ten percent. Brief intensive cognitive behavioral therapy (CBT) programs such as the One-Session Treatment (OST) are found to be effective in the remission of the specific phobias following treatment, but there is still room for improvement. The goal of the current study is to examine whether the long-term efficacy of OST increases by using a homework program supported by an app specifically designed for children; the Kids Beat Anxiety (KibA) homework program.

Methods

Children aged between 7 and 14 years with a specific phobia receive OST preceded by a three-week baseline phase to control for time-effects. Directly following OST, children are randomized to either a four-week homework period supported by an app (OST + app), or standard One-Session Treatment with a four-week homework period that is only supported by therapist instructions (OST-only). Primary outcome variables are diagnosis and severity of the specific phobia. Secondary outcomes include behavioral avoidance, self-reported fear, and functional impairment. Data will be analyzed based on intention-to-treat and per protocol samples using mixed-effects multilevel linear models.

Ethics and dissemination

The current study was approved by the METC of the Academic Medical Center, Amsterdam, The Netherlands (number: NL72697.018.20) and the Ethical Committee of the Ruhr University, Bochum, Germany (number: 663). Results of this trial will be published in peer-reviewed journals.

Trial registration

The study was pre-registered at the Dutch Trial Register, number: NL 9216.

The Youth Anxiety Measure for DSM-5 (YAM-5): An Updated Systematic Review of its Psychometric Properties

The Youth Anxiety Measure for DSM-5 (YAM-5) is a self- and parent-report scale specifically developed to assess symptoms of major anxiety disorders (part 1 or YAM-5-I) and specific phobias/agoraphobia (part 2 or YAM-5-II) in children and adolescents in terms of the contemporary psychiatric classification system. Since its introduction, the measure has been increasingly used in research, making it feasible to provide a summary of its psychometric properties. The present article presents a systematic review of 20 studies that employed the YAM-5, involving 5325 young participants. Overall, the results supported the hypothesized factor structure of both parts of the measure, although there were also some studies that could not fully replicate the original five-factor model of YAM-5-I. The internal consistency of the YAM-5 was generally high for the total scores of both parts, while reliability coefficients for the subscales were more variable across studies. Research also obtained evidence for other psychometric properties, such as test-retest reliability, parent-child agreement, convergent/divergent validity, and discriminant validity. Results further revealed that girls tend to show significantly higher anxiety levels on the YAM-5 than boys. Overall, these findings indicate that the YAM-5 is a promising tool for assessing symptoms of anxiety disorders including specific phobias in young people. Some directions for future research with the YAM-5 and recommendations regarding the use of the measure are given.

Preventing and reducing fear using positive modelling: A systematic review of experimental research with children

Fear of specific stimuli is thought to develop through associative learning mechanisms and research indicates that a form of observational (vicarious) learning known as positive modelling can counter these effects. This systematic review examined and synthesised the experimental positive modelling literature to establish its efficacy for reducing fear. Psych Info, Medline and the Psychology and Behavioural Science Collection databases were systematically searched until August 2021. Of the 1,677 papers identified, 18 experiments across 14 articles met the inclusion criteria. In the majority of these, positive modelling was found to lower fear levels in one or more of three procedures: fear prevention, fear reduction and fear reversal. Procedures inform prevention and treatment initiatives for specific phobias in several ways. The overall efficacy of positive modelling techniques and the ease in which they can be implemented highlight the importance of further research to evaluate their inclusion in prevention and treatment interventions. More research is required to establish the longevity and transferability of positive modelling.

A 25-Year Review of Nighttime Fears in Children: Past, Present, and Future

Nighttime fears in children are common, interfere with daily functioning, and result in considerable disruption in the family. The aim of the present review was to examine empirical literature from the past 25 years that investigated the assessment of nighttime fears in young children and the efficacy and effectiveness of psychosocial treatments for children's nighttime fears. The last review of this literature was in 1997 and examined studies conducted in and prior to 1995 (King et al. in Clin Psychol Rev 17:431-443, 1997). Using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, we conducted a systematic review of the literature aimed at providing a synthesis of the Randomized Control Trials (RCTs) and controlled single-case multiple baseline design studies (MBLs) on the treatment of nighttime fears in children. A search of the literature identified 12 articles, with nine studies utilizing a between-group randomized controlled trial design and three studies utilizing a multiple baseline design. Results demonstrated significant improvements in children's nighttime fears and reductions in disruptive nighttime behaviors using behavioral interventions and cognitive-behavioral strategies. This review provides a commentary on the effectiveness and limitations of the assessment and treatment approaches for nighttime fears in children and suggests directions for future research.

The genetic and environmental structure of fear and anxiety in juvenile twins

Fear and anxiety are conceptualized as responses to acute or potential threat, respectively. Adult twin studies found substantial interplay between genetic and environmental factors influencing fear disorders (phobias) and anxiety disorders. Research in children, however, has largely examined these factors independently. Thus, there exists a substantial knowledge gap regarding the underlying etiologic structure of these closely-related constructs during development. Symptom counts for five fear (criticism, the unknown, death, animal, medical) and four anxiety (generalized, panic, separation, social) dimensions were obtained for 373 twin pairs ages 9-14. Multivariate twin modeling was performed to elucidate the genetic and environmental influences distributed amongst these dimensions. The best fitting model contained one genetic, two familial environmental, and two unique environmental factors shared between fear and anxiety symptoms plus dimension-specific genetic and unique environmental factors. Although several environmental factors were shared between fear and anxiety dimensions, one latent factor accounted for genetic influences across both domains. While adult studies find somewhat distinct etiological differences between anxiety and phobic disorders, the current results suggest that their relative genetic and environmental influences are not as clearly demarcated in children. These etiological distinctions are more nuanced, likely contributing to the highly diffuse symptom patterns seen during development.

Parental Influences and Child Internalizing Outcomes across Multiple Generations

Our objective was to test ways parental caring and over-controlling rearing approaches predict internalizing problems across multiple generations of offspring: from grandparents to parents and from parents to children. We examined whether retrospective perceptions of grandparents' caring and over-controlling behaviors predicted parents' current anxiety problems and rearing behaviors toward their own children in a sample that participated in a clinical trial for youth with a specific phobia (SP). We further tested whether parental anxiety and rearing approaches (as perceived by parents and children) predicted children's longitudinal outcomes of internalizing problems and severity of the SP over time, above and beyond the effects of Cognitive Behavior Therapy (CBT) for the treatment of the SP. We were ultimately interested in testing indirect, intergenerational processes from grandparents to children to identify buffers or risks of anxiety via patterns of care and control from parents. Data were drawn from 113 treatment-seeking children with SPs and their parents (52.2% female, ages 6-15, M age = 8.77, SD = 1.75) from pre-treatment to three-year follow-up. Hierarchical linear models tested the effects of earlier grandparent rearing behaviors on parent and child outcomes and the effects of parent anxiety and rearing behaviors on child outcomes. Models supported indirect effects of grandparent rearing behaviors onto child outcomes via ongoing parent anxiety problems and select rearing behaviors, suggesting these intergenerational processes could potentially maintain anxiety (i.e., use of over-controlling behaviors) or buffer offspring from anxiety risks (i.e., use of care behaviors).

Have Phobias, Will Travel: Addressing One Barrier to the Delivery of an Evidence-Based Treatment

Although a host of evidence-based treatments exist for youth with anxiety disorders, less than 30% of youth and their families receive these treatments. One of the main barriers to receiving these treatments is the lack of access to care, due largely to the absence of mental health professionals who have expertise in the delivery of these treatments in certain geographic locales. The current study examined whether a brief intensive treatment for specific phobias (SPs), Augmented One-Session Treatment (OST-A), would result in comparable treatment gains for families who traveled a considerable distance to receive this treatment when compared to families who resided in our local community. Participants included 76 youth with a clinically confirmed diagnosis of SP (38 local families and an age- and sex-matched sample of 38 nonlocal families). Although SP severity at pretreatment was significantly greater for the nonlocal youth than the local youth, both nonlocal and local youth showed commensurate improvement and maintenance of treatment gains over a 6-month period across several clinical outcome measures. Findings from this study show that OST-A is effective when families choose to travel for treatment, addressing at least one of the barriers to use of this evidence-based treatment.

The mediating role of changes in harm beliefs and coping efficacy in youth with specific phobias

Individuals with specific phobias (SPs) often experience catastrophic cognitions and compromised efficacy regarding their ability to cope when in the presence of the phobic object/situation. In the current study, 165 children (7-16 years; 62% male) received either One Session Treatment or Educational Support Therapy for their SP. The children identified their feared belief and rated "how bad" it was, "how likely" it was to occur, and their ability to cope if it did occur. All of these ratings were reduced from pre-treatment to 6-month follow-up, across both treatment conditions. However, ratings of "how bad" and "how likely" reduced to a significantly greater degree for children who received OST. Greater change in each of the three beliefs predicted lower clinician severity ratings (CSRs) at post-treatment and 6-month follow-up. Additionally, changes in "how bad" and "how likely" the children rated their beliefs, and their reported ability to cope, partially mediated the relationship between treatment and post-treatment and follow-up CSRs. Overall, these findings suggest that although both treatment conditions produced changes in harm beliefs and coping efficacy, OST elicited greater changes and these changes may be important mechanisms in reduction of SP clinical severity.

Treatment of intra-oral injection phobia: a randomized delayed intervention controlled trial among Norwegian 10- to 16-year-olds

OBJECTIVE

To evaluate the effect of five sessions of cognitive behavioural therapy (CBT) for 10- to 16-year-olds with intra-oral injection phobia.

MATERIAL AND METHODS

This was a randomized delayed intervention controlled trial in 67 patients, fulfilling the DSM-5 criteria for specific phobia. All patients received the same CBT performed by dentists specially trained in CBT. The patients were randomly assigned to either an immediate treatment group (ITG) (34 patients) or a waitlist-control group (WCG) (33 patients). The WCG was put on a waitlist for 5 weeks. After treatment, all patients were combined for post-treatment analyses. Assessments including the psychometric self-report scales Intra-oral injection fear scale (IOIF-s), Children's Fear Survey Schedule-Dental Subscale (CFSS-DS), Injection Phobia Scale for children (IS-c) and Mutilation Questionnaire for children (MQ-c) and a behavioural avoidance test (BAT) followed by a questionnaire on cognitions during the BAT, occurred pre-, post-treatment/waitlist and at a 1-year follow-up.

RESULTS

CBT had a significant effect compared to no treatment (WCG). After treatment, the scores on the psychometric self-report scales were significantly reduced and higher levels in the BAT were achieved. The results were maintained at 1-year follow-up. Of the 67 patients, 70.1% received intra-oral injections during CBT treatment, whereas 69.4% of those completing the CBT, in need for further dental treatment, managed to receive the necessary intra-oral injections at their regular dentist.

CONCLUSIONS

The 10- to 16-year-olds diagnosed with intra-oral injection phobia benefitted positively on CBT performed by specially trained dentists.

One session treatment for specific phobias in children: Comorbid anxiety disorders and treatment outcome

BACKGROUND AND OBJECTIVES

One-Session Treatment (OST) for specific phobias has been shown to be effective in reducing phobia severity; however, the effect of different types of co-occurring anxiety disorders on OST outcomes is unknown. The present study examined (1) the effects of co-occurring generalized anxiety disorder (GAD), social anxiety disorder (SAD), or another non-targeted specific phobia (OSP) on the efficacy of OST for specific phobias, and (2) the effects of OST on these co-occurring disorders following treatment.

METHODS

Three groups of 18 youth (7-15 years) with a specific phobia and comorbid GAD, SAD, or OSP were matched on age, gender, and phobia type. Outcome measures included diagnostic status and severity, and clinician rated improvement.

RESULTS

All groups demonstrated an improvement in their specific phobia following treatment. Treatment was equally effective regardless of co-occurring anxiety disorder. In addition, comorbid anxiety disorders improved following OST; however, this effect was not equal across groups. The SAD group showed poorer improvement in their comorbid disorder than the GAD group post-treatment. However, the SAD group continued to improve and this differential effect was not evident six-months following treatment.

LIMITATIONS

The current study sample was small, with insufficient power to detect small and medium effect sizes. Further, the sample only included a portion of individuals with primary GAD or SAD, which may have attenuated the findings.

CONCLUSIONS

The current study demonstrated that co-occurring anxiety disorders did not interfere with phobia treatment. OST, despite targeting a single specific phobia type, significantly reduced comorbid symptomatology across multiple anxiety disorders.

Harm beliefs and coping expectancies in youth with specific phobias

Catastrophic beliefs and lowered coping expectancies are often present in individuals with specific phobias (SPs). The current study examined these beliefs and expectancies in 251 youth who received One Session Treatment for one of the three most common types of SP in youth (animals, natural environment, and situational). We compared the children's subjective beliefs to objective ratings of the likelihood of occurrence and the dangerousness of the feared events. Results revealed pre-treatment differences in the youths' beliefs across phobia types and age. Specifically, children with animal phobias rated their beliefs as more likely to occur than did children with environmental and situational phobias. In addition, older children rated their beliefs as more dangerous than younger children. However, regardless of phobia type or child age, the beliefs improved following treatment. Changes in catastrophic beliefs and coping expectancies were related to changes in clinical severity following treatment but not 6-months following treatment. Moreover, at pre-treatment, children viewed their beliefs as significantly more catastrophic and likely to occur than did independent coders of these beliefs; however, these differences were no longer evident following treatment. Clinical implications are discussed, highlighting how changes in beliefs and expectancies might be associated with treatment outcomes.

Cognitive Behavioral Therapy in a One-Session Treatment for a Preschooler With Specific Phobias

Anxiety disorders among preschool-aged children are as prevalent as in older children, yet younger children are even less likely to receive treatment for these frequently impairing childhood disorders (Egger & Angold, 2006). Specific phobias (SPs) are often the earliest form of anxiety to onset, affect 2.3% of preschoolers (Egger & Angold, 2006), and tend to be stable from 3 years of age to at least 6 years of age (Bufferd, Dougherty, Carlson, Rose, & Klein, 2012). Recently, our group developed and piloted a modified intensive one-session treatment (OST) incorporating play therapy for preschoolers with SP (Farrell, Kershaw, & Ollendick, in press). Given that highly fearful young children may find concentrated, rapid exposure therapy highly confronting, we integrated play therapy into the commencement of this treatment to (a) assist with rapid rapport building with the therapist and (b) enhance the child's motivation through engaging them with play. An initial, controlled, baseline case series (N = 4) provided preliminary evidence of the feasibility, acceptability, and effectiveness of this innovative one-session (3 hours) therapy-POP! Pre-schoolers Overcoming Phobias (POP; Farrell et al., in press). The approach combines child-centered, nondirective play therapy (during Hour 1) and empirically supported OST (during Hours 2 and 3), with 4-year-old preschool children with clinical SPs of dogs. This article presents a case description of POP, describing the assessment approach, cognitive-behavioral case formulation, and intensive treatment of a 4-year-old girl who presented with a severe SP of dogs, along with various other comorbid SPs.

One Session Treatment for Specific Phobias: An Adaptation for Paediatric Blood-Injection-Injury Phobia in Youth

Blood-injection-injury (BII) phobia is a chronic and debilitating disorder, which has largely been neglected in the child literature. The present paper briefly reviews the aetiology of specific phobias with particular attention to BII and provides an integrated developmental model of this disorder in youth. Evidence-based treatments for child-specific phobias are discussed, and the development of a modified one session treatment (OST) approach to enhance treatment outcomes for BII phobia in children and adolescents is described. This approach is illustrated in two children with a primary diagnosis of BII phobia. The cases illustrate the unique challenges associated with treating BII in youth and the need for a modified intervention. Modifications included addressing the role of pain (e.g., psychoeducation, more graduated exposure steps) and disgust (e.g., disgust eliciting exposure tasks) in the expression of the phobia and fainting in the maintenance of this phobia. Moreover, it is recommended that parents be more actively involved throughout treatment (e.g., education session prior to OST, contingency management training, guidance regarding planning exposure tasks following treatment) and for families to participate in a structured e-therapy maintenance programme post-treatment.

Blood-Injection-Injury Phobia and Dog Phobia in Youth: Psychological Characteristics and Associated Features in a Clinical Sample

Blood-Injection-Injury (BII) phobia is a particularly debilitating condition that has been largely ignored in the child literature. The present study examined the clinical phenomenology of BII phobia in 27 youths, relative to 25 youths with dog phobia-one of the most common and well-studied phobia subtypes in youth. Children were compared on measures of phobia severity, functional impairment, comorbidity, threat appraisals (danger expectancies and coping), focus of fear, and physiological responding, as well as vulnerability factors including disgust sensitivity and family history. Children and adolescents with BII phobia had greater diagnostic severity. In addition, they were more likely to have a comorbid diagnosis of a physical health condition, to report more exaggerated danger expectancies, and to report fears that focused more on physical symptoms (e.g., faintness and nausea) in comparison to youth with dog phobia. The present study advances knowledge relating to this poorly understood condition in youth.