PSY 309 Lecture Notes - Lecture 5: Insomnia, Statistical Significance, Internal Validity

• School: University of Oregon
• Department: Psychology
• Course: PSY 309
• Professor: Gordon Hall

Document Summary

Review: dr. hall and colleagues found that 20% of a sample of non-offender community men indicated sexual interest in children. this base rate suggests that: Answer: sexual interest in children alone does not make one a sex offender. Internal validity - efficacy studies: does treatment work in ideal settings, example - university psychology clinic, external validity - effectiveness studies, do the findings extend to practice settings, example - psychiatric hospital. Review: ___studies determine internal validity and ___ studies determine external validity. Discussion: why are some people convinced by results that are not replicated: childhood vaccines may cause autism, antidepressants raise suicide risk in children and adolescents, most sexually abused children exhibit signs of trauma. Statistical versus clinical significance: statistical significance - are results due to chance, clinical significance - are results clinically meaningful to the client, statistical significance does not imply clinical meaningfulness, ex: 1000 people suffer from insomnia.