PSYCH 101 Study Guide - Midterm Guide: Divergent Thinking, Operant Conditioning, Aphasia

• School: UW
• Department: Psychology
• Course: PSYCH 101
• Professor: All

Document Summary

Psych 101 midterm 2 study guide: sensation and perception. Perceptions are how we interpret what our senses detect. Bottom-up processing: starting at the receptors and working up to higher levels of processing. Starting in the brain and working down to the receptors. Absolute threshold: the minimum stimulation necessary to detect a particular light, sound, pressure, taste, or odor, 50 percent of the time. Difference threshold: the just noticeable difference is the minimum difference a person can detect between any two stimuli half the time. Weber-fechner law: for their difference to be perceptible, two stimuli must differ by a constant proportion, not a constant amount. Signal detection: a theory that predicts when we will detect weak signals (measured as a ratio of hits to false alarms). Such as why parents may hear the faintest whimper from a newborn but noticing louder unimportant sounds.