tachistoscope

n. a device that displays (usually by projecting) visual material on a screen for a specific amount of time, usually at very brief intervals. Words, numbers, pictures, and symbols can be rapidly presented in the right or left visual field. The device is used in experiments concerned with visual perception, recognition speed, and memory. It is also widely used in market research concerned with advertising, logos, branding, and so forth. Also called T-scope.

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Psychology term of the day

January 26th 2025

blind

adj.

1. denoting a lack of sight. See blindness.

2. denoting a lack of awareness. In research, a blind procedure may be employed deliberately to enhance experimental control: A single blind is a procedure in which participants are unaware of the experimental conditions under which they are operating; a double blind is a procedure in which both the participants and the experimenters interacting with them are unaware of the particular experimental conditions; and a triple blind is a procedure in which the participants, experimenters, and data analysts are all unaware of the particular experimental conditions.