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The effectiveness of group psychotherapy has been empirically studied and supported over several decades; however, there remains much to understand regarding the specific factors contributing to effective group psychotherapy. The current study uses Kashy and Kenny's (2000) actor-partner interdependence model (APIM) to examine the relationship between an individual group member's outcome and the outcomes of the other group members. This is the first study to examine the effects of the outcomes of other therapy group members on those of individual members. Specifically, we examined the relationship between an individual group member's presymptom score, the aggregated presymptom scores of the other group members, and the aggregated pre- to postsymptom change of the other group members on an individual group member's pre- to postsymptom change. We analyzed the change in pre-post posttraumatic stress disorder (PTSD) symptoms of 105 women in 16 trauma-informed groups in a women's correctional facility. As hypothesized, an individual's presymptom measure (actor effect) and the aggregated presymptom measures of the other group members (partner effect) were positively related to the individual's change in PTSD symptoms. Contrary to our hypothesis, the aggregated pre-post change in PTSD symptom measures of the other group members (partner effect) was negatively associated with the pre-post change in PTSD symptom measures of an individual group member. Social comparison theory is discussed as an explanation for why a group member would report lowered amounts of change when in a group with others who are reporting a higher amount of change. Implications for research and practice are discussed. (Contains 1 table.)

I If I didn't define myself for myself, I would be crunched into othe i r I people's fantasies for me and eaten alive. i - Audre Lorde (1984/[16], p. 137) I Women's research plummets over [COVID-19] lockdown - but articles from men increase. i - Headline from Anna Fazackerley's article in I The Guardian i , May 12, [13] INTRODUCTION: WHY THIS SPECIAL ISSUE? So we developed a call for historical perspectives on group work within and outside the domain of mental health, original empirical research, research-based systematic reviews, research and theory-informed conceptual or case study articles, and scholarly personal narrative on the topic of women and group work. While there is a robust body of literature on the efficacy and effectiveness of psychotherapy treatment for female survivors of sexual trauma, including group work specifically, a gap remains in understanding what the important group process variables are with this population. She has published in the area of group psychotherapy and taught group therapy clinicians for 17 years. [Extracted from the article]

This article explores the place of women in the specialization of group psychotherapy, particularly their representation in journal publications, both in topical coverage related to women as well as in editorial participation and leadership. We first present a brief history of group psychotherapy to provide overall context. Next, we present major cross-cutting themes related to women and group work that emerged from our review of nine peer-reviewed journals deemed most relevant to our investigation. We end with observations and a call for greater inclusion of women in the group psychotherapy literature. [ABSTRACT FROM AUTHOR]

The current study sought to further explore the theoretical model of mutual influence among therapy group members, which postulates that group members influence one another and that this influence is a key component of group treatments. However, a recent finding suggested that group members’ adjusted posttreatment outcomes were not significantly related. The current study reexamined mutual influence by testing this relationship in a markedly different sample on two outcome variables, depression and hopelessness. The data consisted of 78 HIV+ men participating in six therapy groups in a Taiwanese correctional facility. Contrary to our hypothesis, the relationship between an individual group member’s posttreatment depression and the aggregated depression scores of the other group members was not significant. As hypothesized, the relationship between an individual group member’s posttreatment hope and the aggregated sense of hope of the other group members was significant. [ABSTRACT FROM AUTHOR]

This study presents a new conceptualization of behavioral norms as consisting of two components: the average amount of a target behavior exhibited in a group and the consistency of this behavior across group members. Using this conceptualization, we examined the relationship between group behavioral norms regarding intimate behav- iors and individual group members' intimate behaviors in two types of groups: interpersonal growth groups and trauma recovery groups. Specifically, we used the actor-partner interdependence model (APIM; Kenny, Kashy, Manetti, Piero, & Livi, 2002) to examine the relationships between an individual group member's amount of intimate behaviors (i.e., the actor effect), the amount (i.e., group mean) and consistency (i.e., SD) of intimate behaviors of the other group members in both the previous and current sessions (i.e., the partner effects), the interaction of the amount and consistency of the group's previous and current intimate behaviors, and the amount of intimate behaviors exhibited by the individual group member in the current session. A hierar- chical linear modeling analysis revealed that an individual group member's previous amount of intimate behaviors was positively related to her or his amount of intimate behaviors in the current session. Also, there was a significant interaction for the two components of the partner effect in the current session (i.e., group amount and consistency of intimate behaviors in the current session) such that when the consistency of intimate behaviors of the other group members was low, there was a significant, negative relationship between group amount of intimate behaviors and the individuals group member's intimate behaviors in a session. When consistency was high, however, this relationship was not significant. [ABSTRACT FROM AUTHOR]

A session-level analysis examines the relationship between intimate behaviors of an individual group member and of the other group members in a session, and individual group member attendance in the following session. Specifically, the model proposed by Kenny, Mannetti, Pierro, Livi, and Kashy (2002) for analyzing individual and group effects in small groups is used to examine session attendance in 575 group sessions for 30 group members in 5 interpersonal growth groups. Either being the member who enacted the most or least intimate behaviors in a session, or having a relatively lower level of intimate behaviors by the other group members in a session, decreases the likelihood that a group member would attend the following group session. These findings are interpreted in terms of Yalom and Leszcz’s (2005) ideas about being a group outlier and the importance of group context. Implications for research and practice are discussed. [ABSTRACT FROM PUBLISHER]