Chapter 1 - Vocab

Chapter 1 - Vocab - Psychology, Sensation & Perception...

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Absolute - threshold See Threshold, absolute. Action - Motor activities such as moving the head or eyes and locomoting through the environment. Action is one of the major outcomes of the perceptual process. Adjustment, method of - A psychophysical method in which the experimenter or the observer adjusts the stimulus intensity in a continuous manner until the observer detects the stimulus. Agnosia - The inability to recognize objects. Attended stimulus The stimulus that is being attended by a person at a given point in time. Bottom-up processing - Processing in which a person constructs a perception by analyzing the information falling on the receptors. Also called data-based processing. Classical psychophysical methods - The methods of limits, adjustment, and constant stimuli, described by Fechner that are used for measuring thresholds. Cognitive influences on perception - How the knowledge, memories, and expectations that a person brings to a situation influence his or her perception. Constant stimuli, method - of A psychophysical method in which a number of stimuli with different intensities are presented repeatedly in a random order. Data-based processing - Another name for bottom-up processing. Refers to processing that is based on incoming data, as opposed to top-down, or knowledge-based, processing, which is based on prior knowledge. Difference threshold - See Threshold, difference. Environmental stimulus - All of the things in our environment that we can potentially perceive at a given point in time. Knowledge
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Chapter 1 - Vocab - Psychology, Sensation & Perception...

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