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PSYC36 lecture 2.docx

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University of Toronto Scarborough
Amanda Uliaszek

Lecture 2: Common Factors in Therapeutic Change Psychotherapy works! -The average treated patient is better off than approximately 80% of those that were not treated (smith & Glass, 1977) -effect size =0.75 -1930s -what works best? -client centered and psychotherapy > dawn of psychotherapy research -mechanisms> everything that psychotherapy consists of and see if it’s a necessary mechanism i.e. EMDR is the vibrator necessary? -Tx effect + non-specific effect + error = Therapy outcome 1. treatment effect>specific to type of treatment/therapy i.e. cognitive behavior therapy tx effect is … 2. nonspecific effect >whatever all treatment do 3.error> isn’t related to therapy outcome …but not as well for kids -treatment studies: effect size = .70 -effect size so high for kids because you pick specific samples for treatment studies i.e. kids with depression and no other symptoms -not real world samples -dissemination and implementation -teaching clinicans in the settings implement empirically based training Error -Tx effect + Non-specific effect + Error = Therapy Outcome -Time; regression to the mean- seek therapy at their worse and over time simmer down to mean and not as extreme -Environment; change in life situation i.e. job loss, death, divorce, exercise, school/finals starts -Measurement errors; bias rating by the therapist; every measurer is bias; not perfect indicators of the construct -Non-measured error; -Client-specific effects -motivation> drive to reduce the problem -Severity > people less severe in treatment do better ; may not get as better in same amount of time Dodo Bird Verdict -“Everybody has won and all must have prizes” -no winner between client center therapy and psychotherapy -no matter what therapy, will get better -now who gets better more Common Factors -Non-specific factors -Definition: shared by all therapies 99% of the time -Factors shared by all treatment approaches -not model specific -efficacious above specific treatment effects -trying to get committed to the model -
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