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Dive into the research topics where Brian Greenfield is active.

Publication


Featured researches published by Brian Greenfield.


Journal of Attention Disorders | 2004

The marital and family functioning of adults with ADHD and their spouses

L. Eakin; Klaus Minde; Lily Hechtman; E. Ochs; E. Krane; Rachelle Bouffard; Brian Greenfield; Karl J. Looper

Little is known about the family relationships of adults with Attention-Deficit/Hyperactivity Disorder (ADHD). Thus, the marital adjustment and family functioning of 33 married adults with ADHD and their spouses was compared to 26 non-ADHD control participants and their spouses. Results revealed that married adults with ADHD reported poorer overall marital adjustment on the Dyadic Adjustment Scale (DAS; Spanier, 1989) and more family dysfunction on the Family Assessment Device (FAD; Eptein, Baldwin, & Bishop, 1983) than control adults. The spouses of adults with ADHD did not differ from control spouses in reports of overall marital adjustment and family dysfunction. A greater proportion of their marital adjustment scores, however, fell within the maladjusted range. The ADHD adults’ perceptions of the health of their marriages and families were more negative than their spouses’ perceptions. The way in which spouses of ADHD adults compensated for their partners’ difficulties were explored through clinical interviews. The findings in this study underscore the need for assessments and treatments to address marital and family functioning of adults with ADHD.


Journal of Child Psychology and Psychiatry | 2003

The psychosocial functioning of children and spouses of adults with ADHD

Klaus Minde; Laurel Eakin; Lily Hechtman; Eric P. Ochs; Rachelle Bouffard; Brian Greenfield; Karl J. Looper

BACKGROUND It is unclear what the impact of parental ADHD is on the day-to-day life of the rest of the family and how it contributes to the intergenerational transmission of this disorder. METHOD The psychosocial functioning of 23 spouses and 63 children of 33 families with an ADHD parent and 20 spouses and 40 children of 26 comparison families was examined. Both adults and their spouses were assessed for lifetime and current Axis I and Axis II diagnoses, present general psychiatric symptoms and their marital relationships. Children were screened for ADHD and other problems, using the C-DISC, CBLC, TRF and the Social Adjustment Inventory. RESULTS Children with an ADHD parent had higher rates of psychopathology than those from comparison families. Children with ADHD had more co-morbidities than non-ADHD children. Family and marital functions were impaired in ADHD families regardless of the gender of the affected parent. Children without ADHD from families with one psychiatrically healthy parent did well while the behaviour of children with ADHD was always poor and not associated with parental mental health. CONCLUSION The results underscore the strong genetic contribution to ADHD and the need to carefully assess the non-ADHD parent as they seem to influence the well-being of non-ADHD children in families with an ADHD parent.


Pediatric Drugs | 2003

Long-Term Use of Stimulants in Children with Attention Deficit Hyperactivity Disorder

Lily Hechtman; Brian Greenfield

The purpose of this review is to summarize existing data on the long-term safety and efficacy of stimulant treatment, and how long-term stimulant treatment of children with attention deficit hyperactivity disorder (ADHD) affects their outcome. Existing controlled studies of children with ADHD treated and untreated with stimulants, as well as long-term prospective follow-up studies, are reviewed. Children with ADHD treated with stimulants for as long as 2 years continue to benefit from the treatment, with improvements observed in ADHD symptoms, comorbid oppositional defiant disorder, and academic and social functioning, with no significant problems of tolerance or adverse effects. Long-term, prospective follow-up studies into adulthood show that stimulant treatment in childhood has slight benefits regarding social skills and self-esteem. Long-term adverse effects from stimulant treatment in childhood regarding adult height or future substance abuse have not been supported by existing studies.


BMC Psychiatry | 2012

A randomized controlled trial of CBT therapy for adults with ADHD with and without medication

Margaret Weiss; Candice Murray; Michael B. Wasdell; Brian Greenfield; Lauren Giles; Lily Hechtman

BackgroundPrevious studies of psychological treatment in adults with ADHD have not controlled for medication status and include either medicated participants or mixed samples of medicated and unmedicated participants. The objective of this study is to examine whether use of medication improves outcome of therapy.MethodThis was a secondary analysis comparing 23 participants randomized to CBT and Dextroamphetamine vs. 25 participants randomized to CBT and placebo. Both patients and investigators were blind to treatment assignment. Two co-primary outcomes were used: ADHD symptoms on the ADHD-RS-Inv completed by the investigator and improvement in functioning as reported by the patient on the Sheehan Disability Scale.ResultsBoth groups showed robust improvement in both symptoms and functioning, but the use of medication did not significantly improve outcome over and above use of CBT and placebo.ConclusionThis study replicates previous work demonstrating that CBT is an effective treatment for ADHD in adults. Within the limits of this pilot, secondary analysis we were not able to demonstrate that medication significantly augments the outcome of CBT therapy for adults with ADHD. The study was funded by GlaxoSmithKline, Clinical Trials Registry #GSK707.


The Canadian Journal of Psychiatry | 2011

Suicide attempts: prevention of repetition

Marc S. Daigle; Louise Pouliot; François Chagnon; Brian Greenfield

Objective: To present an overview of promising strategies to prevent repetition of suicidal behaviours. Method: This literature review on tertiary preventive interventions of suicide attempts was produced using the computerized databases PubMed and PsycINFO from January 1966 to September 2010, using French- and English-language limits and the key words: suicid* or deliberate self-harm and treatment* or therapy or intervention* or management. Results: Thirteen of the 35 included studies showed statistically significant effects of fewer repeated attempts or suicides in the experimental condition. Overall, 22 studies focused on more traditional approaches, that is, pharmacological or psychological approaches. Only 2 of the 6 pharmacological treatments proved significantly superior to a placebo—a study of lithium with depression and flupenthixol with personality disorders. Eight out of 16 psychological treatments proved superior to treatment as usual or another approach: cognitive-behavioural therapy (CBT) (n = 4), (including dialectical behaviour therapy [n = 2]); psychodynamic therapy (n = 2); mixed (CBT plus psychodynamic therapy [n = 1]); and motivational approach and change in therapist (n = 1). Among the 8 studies using visit, postal, or telephone contact or green-token emergency card provision, 2 were significant: one involving telephone follow-up and the other telephone follow-up or visits. Hospitalization was not related to fewer attempts, and 1 of the 4 outreach approaches had significant results: a program involving individualized biweekly treatment. The rationale behind these single or multiple approaches still needs to be clarified. There were methodological flaws in many studies and some had very specific limited samples. Conclusions: There is a need for more research addressing the problem in definitions of outcomes and measurement of the dependent variables, gender-specific effects, and inclusion of high-risk groups. There is a need for the development and evaluation of new approaches that support collaboration with community resources and more careful assessment and comparisons of existing treatments with different populations.


The Canadian Journal of Psychiatry | 1988

Two subgroups of hyperactives as adults: correlations of outcome.

Brian Greenfield; Lily Hechtman; Gabrielle Weiss

This prospective study explored the association of continuing symptoms of the hyperactive syndrome with adult outcome. A fifteen year follow-up compared 61 hyperactive subjects and 41 matched controls. Outcome measures examined included continuing symptoms of the hyperactive syndrome, antisocial behaviour, substance use, and emotional difficulties. Two subgroups of the hyperactive population were identified. Those hyperactive subjects with moderate or severe continuing symptoms were characterized by significant emotional difficulties, alcohol use, and antisocial behaviour. By contrast, hyperactive subjects with none or only mild continuing symptoms at follow-up did not have other difficulties in psychosocial functioning, and were, in addition, similar to the control group in many respects. The importance of continuing symptoms in determining the adult outcome of children with a diagnosis of ADDH is discussed. Accordingly, the need for comprehensive early, and ongoing interventions is emphasized.


The Canadian Journal of Psychiatry | 1995

Short-term efficacy of interventions by a youth crisis team

Brian Greenfield; Lily Hechtman; Caroline Tremblay

Objective To determine the impact of an outpatient psychiatric Emergency Room Follow-up Team (ERFUT) on the hospitalization rate of youth in crisis (mostly suicidal adolescents). Method The rate of psychiatric admissions of youth to a general pediatric hospital during a year prior to the ERFUT creation was compared to that same rate after the teams creation. The proportion of patients returning to the Emergency Room (ER) 2 or more times was also compared for those same years. Deaths were identified at 3-year follow-up for the experimental group. Results A 16% reduction in the hospitalization rate followed the teams creation, without an increase in the proportion of patients returning to the ER. Also, none of the experimental group subjects had died at 3-year follow-up. Conclusion There is a subpopulation of previously hospitalized suicidal adolescents who can be effectively cared for as outpatients when treated rapidly and intensively.


Current Opinion in Pediatrics | 1997

Juvenile onset bipolar disorder.

Lily Hechtman; Brian Greenfield

This article reviews juvenile onset bipolar disorder with regard to history, diagnosis, comorbidity, differential diagnosis, prevalence, etiology, treatment, and outcome. Specifically, it deals with past and current diagnostic criteria for juvenile onset bipolar disorder, the controversy around its comorbidity with attention deficit hyperactivity disorder (ADHD), and how to differentiate it from ADHD, conduct disorder, drug and alcohol abuse, and schizophrenia, Genetic and neuroimaging studies investigating the possible etiology of this condition are also described. Treatment, both pharmacological (eg, lithium, neuroleptics, anticonvulsants, benzodiazepines, antidepressants) and psychosocial (eg, psychoeducation of child and family, school intervention, family, group and/or individual therapy) are outlined. Finally, long-term outcome and factors which may influence outcome are addressed.


The Canadian Journal of Psychiatry | 2006

Profile of a Metropolitan North American Immigrant Suicidal Adolescent Population

Brian Greenfield; Cécile Rousseau; Joshua Slatkoff; Maxime Lewkowski; Michael Davis; Sébastien Dube; Myrna Lashley; Isabelle Morin; Patti Dray

Objective: Canadian immigrant adolescents have a lower suicide rate than their nonimmigrant peers. We conducted a hypothesis-generating analysis to determine whether this lower rate correlated with level of drug use and (or) with diagnostic and demographic characteristics of Canadian immigrant adolescents presenting to an emergency room for crisis assessment. Method: Known risk factors for suicide were compared among immigrant youth, North American youth, and a culturally mixed group of youth at baseline and at 6-month follow-up. Results: The immigrant group was only differentiated by a lower rate of reported drug use. Conclusion: The lower rate of reported drug use at the time of crisis may contribute to the lower suicide rate among immigrants.


Expert Opinion on Investigational Drugs | 2006

Pharmacological treatment of attention-deficit/hyperactivity disorder in adults

Joshua Slatkoff; Brian Greenfield

With increased awareness that attention-deficit/hyperactivity disorder (ADHD) can persist beyond childhood, pharmacological treatment options for adults have expanded. Short-acting stimulants continue to be the first-line approach, demonstrating clinical efficacy and few adverse events in well-controlled trials, with long-acting stimulants also showing promise. Atomoxetine has also been reported to improve ADHD symptoms and associated dysfunction, although longer-term, head-to-head studies with stimulants are needed. Several antidepressants (e.g., desipramine and buproprion) appear to be effective in the treatment of adult ADHD, but to a lesser extent than stimulants. Data are limited in evaluating the impact of combining pharmacological treatments for ADHD and comorbid conditions. This paper describes the safety and efficacy of medications for treating the core symptoms, psychosocial features and cognitive dysfunctions associated with adult ADHD.

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Gabrielle Weiss

Montreal Children's Hospital

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Joy Etcovitch

McGill University Health Centre

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Margaret Weiss

University of British Columbia

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