PSYC 2650 Lecture Notes - Lecture 7: Spreading Activation, Dependent And Independent Variables

• School: University of Guelph
• Department: Psychology
• Course: PSYC 2650
• Professor: Roderick Barron

Document Summary

Type types of priming: posner and snyder (1975) experiment: task: same - different (dependent variable = response time) If two letters (e. g. , gg) are the same (identical) then press the yes button. If two letters are different (e. g. , gt) then press the no button. Type of priming stimulus (warning signal: neutral (e. g. , +) control condition. Posner and snyder (1975) experiment: validity of the prime. Priming stimulus (e. g. , g) predicts target pair (e. g. , gg) only 20% of the time: misleading primes (e. g. , h) occur 80% of the time. Priming stimulus (e. g. , g) predicts target pair (e. g. , gg) 80% of the time: misleading primes (e. g. h) occur only 20% of the time. Stimulus-based (repetition) priming occurs in the low validity prime condition. The priming stimulus predicts the target stimuli only 20% of the time. Priming does not produce an expectancy for the target: benefit (facilitation) is due to just repeating the stimulus.