PSYB01H3 Lecture : lectures 2-4
Document Summary
Psychotherapy is beginning to emerge as treatment for schizophrenia (in addition to antipsychotic drugs) Inferences of cause and effect require: temporal precedence: causal variable should precede the effect i. How is this tested in an experiment manipulate iv; observe effect on dv. A controlled experiment is needed to confirm causality: covariation: when cause present, effect occurs; when cause not present, effect doesn"t occur www. notesolution. com. Demonstrated in an experiment when : elimination of plausible alternative explanation nothing other than causal variable could be responsible. Description, prediction, causality, and explanation all closely related: explanation may be deemed inaccurate when new causes found, e. g. crib death in the 1950s. Sudden infant death syndrome was attributed to enlarged thyroid glands and subjecting them to radiation therapy to shrink the gland. The children in the study were from impoverished backgrounds and 50 years later started to develop severe forms of cancer. The enlarged thyroid gland was due to malnourishment.
