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Dive into the research topics where Kerri Ritchie is active.

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Featured researches published by Kerri Ritchie.


Journal of Personality Assessment | 2004

Attachment Predicts Treatment Completion in an Eating Disorders Partial Hospital Program Among Women With Anorexia Nervosa

Giorgio A. Tasca; Daniel Taylor; Kerri Ritchie; Louise Balfour

The goal of this study was to examine if attachment theory can provide a framework for understanding treatment completion in an eating disorders partial hospital program among women with anorexia nervosa (AN). Attachment was measured using the Attachment Styles Questionnaire (Feeney, Noller, & Hanrahan, 1994). As hypothesized, self-reports of high avoidant attachment predicted noncompletion of treatment for those with AN binge-purge subtype (ANB). However, this relationship did not emerge for those with AN restricting subtype (ANR). Also as hypothesized, self-reports of high anxious attachment predicted completing treatment for those with ANB but not for those with ANR. For completers with ANB and ANR, the program was helpful in increasing body weight and lowering drive for thinness, body dissatisfaction, interpersonal problems, and depression. Attachment avoidance, characterized by devaluing ones need for relationships, may be a contraindication for group-based partial hospital treatment of ANB. Attachment anxiety, characterized by high preoccupation with relationships, may facilitate remaining in treatment for those with ANB.


Psychotherapy | 2011

Implications of attachment theory and research for the assessment and treatment of eating disorders.

Giorgio A. Tasca; Kerri Ritchie; Louise Balfour

In this paper, we review the research literature on attachment and eating disorders and suggest a framework for assessing and treating attachment functioning in patients with an eating disorder. Treatment outcomes for individuals with eating disorders tend to be moderate. Those with attachment-associated insecurities are likely to be the least to benefit from current symptom-focused therapies. We describe the common attachment categories (secure, avoidant, anxious), and then describe domains of attachment functioning within each category: affect regulation, interpersonal style, coherence of mind, and reflective functioning. We also note the impact of disorganized mental states related to loss or trauma. Assessing these domains of attachment functioning can guide focused interventions in the psychotherapy of eating disorders. Case examples are presented to illustrate assessment, case formulation, and group psychotherapy of eating disorders that are informed by attachment theory. Tailoring treatments to improve attachment functioning for patients with an eating disorder will likely result in better outcomes for those suffering from these particularly burdensome disorders.


Psychotherapy | 2014

Change in attachment insecurity is related to improved outcomes 1-year post group therapy in women with binge eating disorder.

Hilary Maxwell; Giorgio A. Tasca; Kerri Ritchie; Louise Balfour; Hany Bissada

An interpersonal model of Binge Eating Disorder (BED) posits that difficulties with social functioning precipitate negative affect, which in turn causes binge eating as a means of coping. Thus, long-term decreases in attachment insecurity may be important for women with BED. No research has assessed if long-term change in attachment insecurity is associated with sustained change in other outcomes. In the current study, we hypothesized that changes in attachment anxiety and avoidance will decrease at posttreatment and will be maintained up to 12 months after Group Psychodynamic Interpersonal Psychotherapy (GPIP). We further hypothesized that long-term stability of these changes in attachment insecurity will be related to other long-term outcomes. Women with BED (N = 102) attended 16 sessions of GPIP. Measures were completed pretreatment, posttreatment, at 6 and 12 months follow-up. Attachment anxiety, attachment avoidance, and the other outcome variables decreased significantly at 12 months posttreatment. Reductions in attachment anxiety and avoidance were significantly related to decreases in interpersonal problems up to 12 months posttreatment, and reduction in attachment anxiety was significantly related to decreases in depressive symptoms 12 months posttreatment. Further, the significant relationship between reduced attachment avoidance and decreased interpersonal problems strengthened over the long term. This is the first study to show an association between change in attachment insecurity and change in other outcomes in the long term, and to show an adaptive spiral in which greater reduction in attachment avoidance is increasingly associated with ongoing improvement of interpersonal problems.


Psychotherapy Research | 2013

Matching women with binge eating disorder to group treatment based on attachment anxiety: outcomes and moderating effects.

Giorgio A. Tasca; Kerri Ritchie; Natasha Demidenko; Louise Balfour; Valerie Krysanski; Kirsti Weekes; Ann Marie Barber; Leah Keating; Hany Bissada

Abstract We hypothesized that compared to therapy groups homogeneously composed of women with binge eating disorder (BED) and low attachment anxiety, groups with high attachment anxiety would have better outcomes and a greater alliance-outcome relationship. We assigned 102 women with BED to therapy groups homogeneously composed of low attachment anxiety (n =52) or high attachment anxiety participants (n=50) who received Group Psychodynamic Interpersonal Psychotherapy (GPIP). GPIP resulted in improved outcomes with large effects. Attachment anxiety condition did not moderate outcomes. However, attachment anxiety condition did moderate the alliance-outcome relationship: i.e., group alliance growth was associated with improved binge eating only in the high attachment anxiety condition. Clinicians should be attentive to and encourage the growth of group therapy alliance especially for anxiously attached individuals.


Psychotherapy | 2014

Interpersonal learning is associated with improved self-esteem in group psychotherapy for women with binge eating disorder.

Meagan E. Gallagher; Giorgio A. Tasca; Kerri Ritchie; Louise Balfour; Hilary Maxwell; Hany Bissada

Yalom and Leszcz (2005) indicated that interpersonal learning is a key therapeutic factor in group psychotherapy. In this study, we conceptualized interpersonal learning as the convergence over time between an individuals and the groups perception of the individuals cohesion to the group. First, we developed parallel measures of: (a) an individuals self-rated cohesion to the group (Cohesion Questionnaire-Individual Version [CQ-I]), and (b) the groups rating of the individuals cohesion to the group (CQ-G) based on the original Cohesion Questionnaire (CQ; Piper, Marache, Lacroix, Richardsen, & Jones, 1983). Second, we used these parallel scales to assess differences between an individuals self-rating and the mean of the groups ratings of the individuals cohesion to the group. Women with binge eating disorder (N = 102) received Group Psychodynamic Interpersonal Psychotherapy. Participants were assigned to homogeneously composed groups of either high or low attachment anxiety. Outcomes were measured pre- and post-treatment, and the CQ-I and CQ-G were administered every fourth group session. We found significant convergence over time between the CQ-I and mean CQ-G scale scores in both attachment anxiety conditions. Participants with higher attachment anxiety had lower individual self-ratings of cohesion and had greater discrepancies between the CQ-I and CG-G compared with those with lower attachment anxiety. There was a significant relationship between greater convergence in cohesion ratings and improved self-esteem at post-treatment. More accurate self-perceptions through feedback from group members may be a key factor in facilitating increased self-esteem in group therapy. Group therapists may facilitate such interpersonal learning, especially for those higher in attachment anxiety, by noting discrepancies and then encouraging convergence between an individual and the group in their perceptions of cohesion to the group.


Psychotherapy | 2014

Change in attachment to the therapy group generalizes to change in individual attachment among women with binge eating disorder.

Leah Keating; Giorgio A. Tasca; Mary L. Gick; Kerri Ritchie; Louise Balfour; Hany Bissada

Attachment to groups is analogous to attachment to individuals, and may play an important role in group functioning and in group psychotherapy outcomes. This study examined whether attachment to the therapy group can change during treatment, and whether such change predicts improvements in treatment outcomes, including individual attachment, up to 1 year posttreatment. Eighty-seven women with binge eating disorder (BED) attended Group Psychodynamic Interpersonal Psychotherapy (GPIP). Participants were assigned to one of two conditions in which groups were homogeneously composed of women with either higher or lower individual attachment anxiety. Outcomes were assessed pre, post, 6 months, and 1 year posttreatment. Attachment to the group was assessed at weeks 4, 8, 12, and 16 of GPIP. Group attachment insecurity decreased significantly during treatment. Reductions in group attachment avoidance predicted decreases in individual attachment insecurity at 1 year posttreatment. Study condition did not moderate these associations. These results indicate that women with BED who receive GPIP are able to generalize improvements in group attachment security to their individual attachment relationships outside of therapy up to 1 year post group treatment.


PLOS ONE | 2013

Characterization of IGF-II isoforms in binge eating disorder and its group psychological treatment.

Giorgio A. Tasca; Julien Yockell Lelievre; Qing Qiu; Kerri Ritchie; John Little; Anne Trinneer; Ann Barber; Livia Chyurlia; Hany Bissada; Andrée Gruslin

Intro Binge eating disorder (BED) affects 3.5% of the population and is characterized by binge eating for at least 2 days a week for 6 months. Treatment options include cognitive behavioral therapy, interpersonal psychotherapy, and pharmacotherapy which are associated with varied success. Little is known about the biology of BED. Since there is evidence that the insulin like growth factor system is implicated in regulation of body weight, insulin sensitivity and feeding behavior, we speculated it may be involved in BED. Methods A cross-sectional comparison was made between three groups of women: overweight with BED, overweight without BED and normal weight without BED. Women were assigned to Group Psychodynamic Interpersonal Psychotherapy. Blood was collected before therapy, at completion and at 6months follow up for evaluation of IGF-II using Western blot. Results 97 overweight women with BED contributed to the cross-sectional comparison. The two control groups comprised 53 overweight women without BED, and 50 age matched normal weight women without BED. Obese women had significantly lower Big IGF-II than normal weight women, p = .028; Overweight women with BED had higher Mature IGF-II than normal weight women, p<.05. Big IGF-II showed a significant decreasing slope from pre- to post- to six months post-group psychological treatment, unrelated to changes in BMI (p = .008). Conclusion Levels of IGF-II isoforms differed significantly between overweight and normal weight women. Overweight women with BED display abnormal levels of circulating IGF-II isoforms. BED is characterized by elevated mature IGF-II, an isoform shown to carry significant bioactivity. This finding is not related to BMI or to changes in body weight. The results also provide preliminary evidence that BIG IGF-II is sensitive to change due to group psychological treatment. We suggest that abnormalities in IGF-II processing may be involved in the neurobiology of BED.


Psychotherapy Research | 2006

Attachment scales predict outcome in a randomized controlled trial of two group therapies for binge eating disorder: An aptitude by treatment interaction

Giorgio A. Tasca; Kerri Ritchie; Gretchen Conrad; Louise Balfour; Jane Gayton; Vanessa Lybanon; Hany Bissada


Group Dynamics: Theory, Research, and Practice | 2014

Attachment anxiety moderates the relationship between growth in group cohesion and treatment outcomes in Group Psychodynamic Interpersonal Psychotherapy for women with binge eating disorder.

Meagan E. Gallagher; Giorgio A. Tasca; Kerri Ritchie; Louise Balfour; Hany Bissada


Canadian Journal of Public Health-revue Canadienne De Sante Publique | 2007

Screening HIV in pregnancy: a survey of prenatal care patients.

Veronique Dorval; Kerri Ritchie; Andrée Gruslin

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