Does interpersonal dependency affect therapeutic outcome? A meta-analytic review.

This study examined whether interpersonal dependency affects therapeutic outcome, using meta-analytic techniques to synthesize results from 31 studies (49 effect sizes; overall N = 3807). High levels of dependency were associated with more positive outcome in psychodynamic therapy (r = 0.11, p < 0.05), but not cognitive-behavioural therapy (r = -0.05, ns), and were associated with a less positive outcome in pharmacological treatment (r = -0.15, p < 0.001). Other predictors of outcome included patient diagnosis (high levels of dependency were linked with more positive outcome for patients with anxiety disorders but not those with depression), outcome measure (high levels of dependency were associated with significantly greater improvement in global functioning but not symptom reduction) and dependency measure (cognitive and cognitive-behavioural dependency scales yielded less positive results than other types of measures). These results contribute to a growing body of literature examining effects of personality on treatment process and outcome. © 2019 John Wiley & Sons, Ltd.

Unhealthy dependency in victims and perpetrators of child maltreatment: A meta-analytic review.

OBJECTIVE: Theoretical conceptualizations of interpersonal dependency and dependent personality disorder suggest that (a) high levels of dependency in parents may increase risk for perpetration of child abuse and neglect and (b) children who are victimized may show elevated levels of dependency later in life. This study used meta-analytic techniques to examine these hypothesized links. METHOD: A systematic search of psychological and medical online databases revealed 14 published studies (21 effect sizes) examining the link between parental dependency and perpetration of abuse or neglect (overall N of perpetrators = 1,321), and 14 published studies (25 effect sizes) assessing dependency in victims of child abuse and neglect (overall N of victims = 38,265). RESULTS: The dependency-abuse effect size (d) for perpetrators collapsed across all moderating variables was 0.36, which is considered to be in the medium range. The dependency-victimization effect size (d) collapsed across all moderating variables was 0.29, also a medium effect size. CONCLUSION: These results support and extend analyses of the relationship between dependency and child maltreatment, and suggest that dependency may be both a precipitant of child maltreatment and consequence of victimization. Theoretical and clinical implications are discussed, with suggestions for further research outlined.

Beyond passivity: Dependency as a risk factor for intimate partner violence.

Interpersonal dependency in male perpetrators of intimate partner violence (IPV) is an understudied phenomenon but one that has noteworthy clinical implications. The present investigation used meta-analytic techniques to quantify the dependency-IPV link in all extant studies examining this relationship (n of studies = 17). Studies were gathered via an extensive literature search using relevant dependency/IPV search terms in the PsychInfo, Medline and Google Scholar databases. Results revealed a small but statistically significant relationship between dependency and perpetration of IPV in men (r = 0.150, Combined Z = 4.25, p < 0.0001), with the magnitude of the dependency-IPV link becoming stronger (r = 0.365, Combined Z = 6.00, p < 0.0001) when studies using measures of dependent personality disorder symptoms were omitted. Other moderators of the dependency-IPV effect size included IPV measure, type of sample and perpetrator age. These findings illuminate the underlying dynamics and interpersonal processes involved in some instances of IPV and may aid in understanding how to identify and treat male perpetrators of domestic violence.