| Consciousness | subjective awareness, or the ability to be aware of and make conscious judgments about the environment. |
| Dependent variable | That aspect of an experiment that is allowed to freely vary to determine if it is affected by changes in the independent variable. |
| Depth perception | Our ability to perceive the distance of objects from us. |
| Ego | (psychoanalysis) the conscious mind |
| Just noticeable difference | The smallest difference that can be detected between two physical stimuli. |
| Law of Effect | When a reward follows a behaviour, that behaviour is strengthened. |
| Neurotransmitter | A chemical compound release by one neuron to an affect the transmembrane potential of another. |
| Unconscious motivation | motivation that resides outside conscious awareness. freud posited the existence of unconsious motivation and asserted that it was responsible, in large part, for disturbed behavior |
Drag corresponding items onto each other to make them disappear.
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