CAS PS 101 Study Guide - Midterm Guide: Hallucinogen, Operant Conditioning, Pragmatics

• School: Boston University
• Department: Psychological & Brain Sciences
• Course: CAS PS 101
• Professor: Barry Grant

Document Summary

Sensation: stimulation of the sense organs (one of the 5 sense) from physical stimuli. Perception: selection, organization, and interpretation of sensory input (what we come to know) Experienced at the same time but are two separate processes. Absolute threshold: the minimum amount of stimulus needed to perceive it (ie. automatic headlights) Just noticeable difference (jnd): smallest difference in stimulus intensity that a specific sense can detect. Signal detection theory: in order to detect a signal, we need other factors that determine whether we perceive it: sensory information and decision processes. The detection of stimuli involves detection and perception. A hit - correct about perceiving a stimulus. A false alarm - perceiving a stimulus that isn"t there. A miss - not perceiving a stimulus that is present. Correct rejection - correct about not perceiving a stimulus. Subliminal perception: the registration of sensory input without conscious awareness, puts it below a threshold.