ESSPED 5742 Lecture Notes - Lecture 6: Classical Conditioning, Reinforcement, Normative Social Influence

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Value altering effect: increase in reinforcing effectiveness of a stimulus increase in the frequency of behavior decrease in reinforcing effectiveness of a stimulus. Deprivation of food, water, oxygen, activity, & sleep. Ingestion of food and water, oxygen intake, engaging in activity, & sleeping. Value-altering motivating effects that are a function of a learning history. Examples: grades, favorite activity, money, a friend you haven"t seen for a long time, a missing object needed to complete a task, attention, social approval. Motivating operation (mo) vs discriminative stimulus (sd) They both evoke operant behavior (but for very different reasons) Sds have to do with the availability of a reinforcer (has the reinforcer been delivered in the presence of that object in the past?) Mos have to do with the effectiveness a reinforcer (is the reinforcer reinforcing at that moment in time?) A stimulus is any condition, event, or change in the physical world. Stimuli have physical dimensions (size, color, intensity, weight, position)

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