longitudinal

adj.

1. in anatomy, referring to the long axis of the body.

2. in research, referring to the time dimension—that is, running over an extended period.

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Psychology term of the day

January 3rd 2025

noncontingent reinforcement

the process or circumstances in which a stimulus known to be effective as a reinforcer is presented independently of any particular behavior. Because contingencies may arise by accident (see accidental reinforcement), behavior-independent presentation of stimuli cannot guarantee that no contingency exists between a response and the stimuli. See reinforcement.