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Dive into the research topics where Mark R. Dadds is active.

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Featured researches published by Mark R. Dadds.


Journal of Consulting and Clinical Psychology | 1996

Family treatment of childhood anxiety: A controlled trial.

Paula M. Barrett; Mark R. Dadds; Ronald M. Rapee

A family-based treatment for childhood anxiety was evaluated. Children (n = 79) aged 7 to 14 who fulfilled diagnostic criteria for separation anxiety, overanxious disorder, or social phobia were randomly allocated to 3 treatment conditions: cognitive-behavioral therapy (CBT), CBT plus family management (CBT + FAM), and waiting list. The effectiveness of the interventions was evaluated at posttreatment and at 6 and 12 months follow-up. The results indicated that across treatment conditions, 69.8% of the children no longer fulfilled diagnostic criteria for an anxiety disorder, compared with 26% of the waiting-list children. At the 12-month follow-up, 70.3% of the children in the CBT group and 95.6% of the children in the CBT + FAM group did not meet criteria. Comparisons of children receiving CBT with those receiving CBT + FAM on self-report measures and clinician ratings indicated added benefits from CBT + FAM treatment. Age and gender interacted with treatment condition, with younger children and female participants responding better to the CBT + FAM condition.


Biological Psychiatry | 2008

Oxytocin Increases Gaze to the Eye Region of Human Faces

Adam J. Guastella; Philip B. Mitchell; Mark R. Dadds

BACKGROUND In nonhuman mammals, oxytocin has a critical role in peer recognition and social approach behavior. In humans, oxytocin has been found to enhance trust and the ability to interpret the emotions of others. It has been suggested that oxytocin may enhance facial processing by increasing focus on the eye region of human faces. METHODS In a double-blind, randomized, placebo-controlled, between-subject design, we tracked the eye movements of 52 healthy male volunteers who were presented with 24 neutral human faces after intranasal administration of 24 IU oxytocin or placebo. RESULTS Participants given oxytocin showed an increased number of fixations and total gaze time toward the eye region compared with placebo participants. CONCLUSIONS Oxytocin increases gaze specifically toward the eye region of human faces. This may be one mechanism by which oxytocin enhances emotion recognition, interpersonal communication, and social approach behavior in humans. Findings suggest a possible role for oxytocin in the treatment of disorders characterized by eye-gaze avoidance and facial processing deficits.


Journal of Consulting and Clinical Psychology | 1998

The role of parental anxiety in the treatment of childhood anxiety.

Vanessa E. Cobham; Mark R. Dadds; Susan H. Spence

Sixty-seven children aged 7 to 14 who met diagnostic criteria for an anxiety disorder were assigned to conditions according to parental anxiety level. Within these conditions, children were randomly assigned to 1 of 2 treatments: child-focused cognitive-behavioral therapy (CBT) or child-focused CBT plus parental anxiety management (CBT + PAM). At posttreatment, results indicated that within the child-anxiety-only condition, 82% of the children in the CBT condition no longer met criteria for an anxiety disorder compared with 80% in the CBT + PAM condition. Within the child + parental anxiety condition, 39% in the CBT condition no longer met criteria compared with 77% in the CBT + PAM condition. At follow-up, these differences were maintained, with some weakening over time. Results were not consistent across outcome measures. The interpretation and potential clinical implications of these findings are discussed.


Journal of Clinical Child and Adolescent Psychology | 2006

School Connectedness Is an Underemphasized Parameter in Adolescent Mental Health: Results of a Community Prediction Study

Ian M. Shochet; Mark R. Dadds; David Ham; Roslyn Montague

There is limited prospective research on the relation between school connectedness (i.e., the extent to which students feel accepted, valued, respected, and included in the school) and mental health symptoms in adolescents. A sample of 2,022 students (999 boys and 1,023 girls) ages 12 to 14 years were measured at 2 time points (12 months apart) on school connectedness and mental health symptoms (general functioning, depression, and anxiety symptoms). School connectedness correlated extensively with concurrent mental health symptoms at both time points (between 38% and 55% covariation with depression, 26% to 46% with general functioning, and 9% and 16% for anxiety symptoms). Using hierarchical linear modeling, school connectedness also predicted depressive symptoms 1 year later for both boys and girls, anxiety symptoms for girls, and general functioning for boys, even after controlling for prior symptoms. The reverse, however, was not true: Prior mental health symptoms did not predict school connectedness 1 year later when controlling for prior school connectedness. Results suggest a stronger than previously reported association with school connectedness and adolescent depressive symptoms in particular and a predictive link from school connectedness to future mental health problems.


Australian and New Zealand Journal of Psychiatry | 2004

Australian Data and Psychometric Properties of the Strengths and Difficulties Questionnaire

David J. Hawes; Mark R. Dadds

Objective: We examine the Australian psychometric properties of the Strengths and Difficulties Questionnaire (SQD), a brief screening measure of behavioural and emotional problems in children and adolescents. Method: Using a large community sample (n = 1359) of young Australian children (4–9 years), we assessed the internal consistency, stability, and external validity of the parent-report SDQ. Normative data and cut-offs were also produced. Results: Moderate to strong internal reliability was exhibited across all SDQ subscales, and support was found for the original five-factor structure of the measure. Adequate validity was evidenced in the relationship of these scales to one another, while correlations between the SDQ subscales, teacher ratings, and diagnostic interviews demonstrated sound external validity. SDQ total difficulties scores were associated with concurrent treatment status and scores over a 12-month period were stable. Conclusions: The current study of the SDQ with Australian children presents evidence of sound psychometric properties. Being the first study to empirically support the use of the SDQ in Australia, it is recommended that the youth and teacher-report forms of the measure receive similar attention in the future.


Journal of Consulting and Clinical Psychology | 2001

Cognitive-behavioral treatment of anxiety disorders in children: long-term (6-year) follow-up.

Paula M. Barrett; Amanda Louise Duffy; Mark R. Dadds; Ronald M. Rapee

Authors evaluated the long-term effectiveness of cognitive-behavioral therapy (CBT) for childhood anxiety disorders. Fifty-two clients (aged 14 to 21 years) who had completed treatment an average of 6.17 years earlier were reassessed using diagnostic interviews, clinician ratings, and self- and parent-report measures. Results indicated that 85.7% no longer fulfilled the diagnostic criteria for any anxiety disorder. On a majority of other measures, gains made at 12-month follow-up were maintained. Furthermore, CBT and CBT plus family management were equally effective at long-term follow-up. These findings support the long-term clinical utility of CBT in treating children and adolescents suffering from anxiety disorders.


Journal of Clinical Child Psychology | 2001

The efficacy of a universal school-based program to prevent adolescent depression.

Ian M. Shochet; Mark R. Dadds; Denise E. Holland; Kathy Whitefield; Paul Harnett; Susan M. Osgarby

Evaluated whether a universal school-based program, designed to prevent depression in adolescents, could be effectively implemented within the constraints of the school environment. Participants were 260 Year 9 secondary school students. Students completed measures of depressive symptoms and hopelessness and were then assigned to 1 of 3 groups: (a) Resourceful Adolescent Program-Adolescents (RAP-A), an 11-session school-based resilience building program, as part of the school curriculum; (b) Resourceful Adolescent Program-Family (RAP-F), the same program as in RAP-A, but in which each students parents were also invited to participate in a 3-session parent program; and (c) Adolescent Watch, a comparison group in which adolescents simply completed the measures. The program was implemented with a high recruitment (88%), low attrition rate (5.8%), and satisfactory adherence to program protocol. Adolescents in either of the RAP programs reported significantly lower levels of depressive symptomatology and hopelessness at post-intervention and 10-month follow-up, compared with those in the comparison group. Adolescents also reported high satisfaction with the program. The study provides evidence for the efficacy of a school-based universal program designed to prevent depression in adolescence.


Journal of Consulting and Clinical Psychology | 1999

Early intervention and prevention of anxiety disorders in children: results at 2-year follow-up.

Mark R. Dadds; Denise E. Holland; Kristin R. Laurens; Miranda J. Mullins; Paula M. Barrett; Susan H. Spence

The Queensland Early Intervention and Prevention of Anxiety Project evaluated a child- and family-focused group intervention for preventing anxiety problems in children. This article reports on 12- and 24-month follow-up data to previously reported outcomes at posttreatment and at 6-month follow-up. A total of 1,786 7- to 14-year-olds were screened for anxiety problems using teacher nominations and childrens self-report. After diagnostic interviews, 128 children were selected and assigned to either a 10-week school-based child- and parent-focused psychosocial intervention or a monitoring group. Both groups showed improvements immediately at postintervention and at 6-month follow-up; the improvement was maintained in the intervention group only reducing the rate of existing anxiety disorder and preventing the onset of new anxiety disorders. At 12 months, the groups converged, but the superiority of the intervention group was evident again at 2-year follow-up. Severity of pretreatment diagnoses, gender, and parental anxiety predicted poor initial response to intervention, whereas pretreatment severity was the only predictor of chronicity at 24 months. Overall, follow-up results show that a brief school-based intervention for children can produce durable reductions in anxiety problems.


Biological Psychiatry | 2008

A Randomized Controlled Trial of D-Cycloserine Enhancement of Exposure Therapy for Social Anxiety Disorder

Adam J. Guastella; Rick Richardson; Peter F. Lovibond; Ronald M. Rapee; Jonathan E. Gaston; Philip B. Mitchell; Mark R. Dadds

BACKGROUND Pilot research has suggested that D-cycloserine (DCS) enhances treatment outcomes for anxiety disorders when employed as an adjunct to exposure therapy (ET). The aim of this study was to determine whether 50 mg of DCS enhances ET for social anxiety disorder (SAD) according to a comprehensive set of symptom and life impairment measures. METHODS In a randomized double-blind placebo-controlled trial, we administered 50 mg of DCS or placebo in combination with ET to 56 participants who met primary diagnosis for SAD. RESULTS Participants administered DCS reported greater improvement on measures of symptom severity, dysfunctional cognitions, and life-impairment from SAD in comparison with placebo-treated participants. Effect sizes were mostly in the medium range. Results also indicated that the amount of adaptive learning about ones ability to give speeches in front of an audience interacted with DCS to enhance treatment outcome. CONCLUSIONS This study shows that the administration of DCS before ET enhances treatment outcomes for SAD. Results also provide the first preliminary evidence to suggest that DCS moderates the relationship between a reduction in negative appraisals about ones speech performance and improvement in overall SAD symptoms.


Journal of Consulting and Clinical Psychology | 2005

Disentangling the underlying dimensions of psychopathy and conduct problems in childhood: a community study.

Mark R. Dadds; Jenny Fraser; Aaron D J Frost; David J. Hawes

The psychometric and predictive validity of callous-unemotional (CU) traits as an early precursor of conduct disorder and antisocial behavior were assessed. A community sample of children (4-9 years of age) were tested 12 months apart with the Antisocial Process Screening Device (APSD; P. J. Frick & R. D. Hare, 2002), a measure of early signs of psychopathy in children. Factor analysis supported the structure of the APSD. Given controversy surrounding construct overlap between psychopathy and conduct problems, a factor analysis was conducted on pooled items from the Strengths and Difficulties Questionnaire and APSD. A 5-factor solution resulted: antisocial, hyperactivity, CU traits, anxiety, and peer problems. CU traits added small but significant improvements in the 12-month prediction of antisocial behavior for boys and older girls, after controlling for Time 1 measures. These results indicate that although the dimensions of the APSD overlap with dimensions of the disruptive behavior disorders, CU traits have unique predictive validity in childhood.

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John Brennan

University of New South Wales

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Eva R. Kimonis

University of New South Wales

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Ian M. Shochet

Queensland University of Technology

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Paul J. Frick

Australian Catholic University

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