PSY 101 Study Guide - Final Guide: Positron Emission Tomography, Predictive Validity, Psych
Document Summary
Evaluates whether or not psychological problems reflect underlying neurological damage/brain defects. Luria nebraska test: reveals patterns of skill deficits suggestive of particular sites of brain damage. Galvanic skin response (gsr): skin temp, sweat, measures electricity that passes through two points on the skin. Electroencephalograph (eeg): brain waves, looks for brain damage and possibly schizophrenia. Electromyograph (emg): muscle activity, how tense you are. Positron emission tomography (pet) scan: blood glucose in the brain, regional activity. Functional magnetic resonance imaging (fmri): more detailed, what lights up when. Brain electrical activity mapping (beam): electrical brain activity. Specific diagnostic criteria used, but do not need all for a diagnosis. Disorders that share features are grouped togeth er. Reliability/validity: degree to which test measures the traits/constructs it intends to measure + degree to which method yields scientifically accurate and defensible results. Predictive validity: ability of diagnostic system to predict course in which disorder is likely to follow.
