9+ Variable Interval (AP Psych Def) Examples

variable interval ap psychology definition

9+ Variable Interval (AP Psych Def) Examples

In the realm of operant conditioning, a schedule of reinforcement where a response is rewarded after an unpredictable amount of time has passed is present. This schedule yields a moderate, steady rate of responding because the individual cannot predict when the reinforcement will become available. An example would be checking email; one checks at random times because one never knows exactly when a new email will arrive.

This type of reinforcement schedule is important for maintaining consistent behavior over long periods. Because the reward’s timing is unpredictable, the subject is more likely to continue the behavior in anticipation of the eventual reinforcement. Historically, understanding these schedules has been vital in diverse fields, from animal training to designing effective strategies in behavioral therapy, highlighting how modifying behavior requires an understanding of these principles.

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7+ What is Variable Interval? A Definition

definition of variable interval

7+ What is Variable Interval? A Definition

A schedule of reinforcement where a response is rewarded after unpredictable amounts of time has passed. The duration between reinforcements varies around an average interval. For example, a reward might be delivered after 5 minutes, then after 7 minutes, then after 3 minutes, with the average interval being 5 minutes. This unpredictability leads to a consistent rate of response, as the subject cannot predict when the reward will be presented.

This type of schedule generates behaviors that are highly resistant to extinction. Because the reinforcement is not predictable, the subject continues to respond in the hope of receiving a reward, even after a period of no reinforcement. This has practical applications in maintaining consistent behavior in various settings, from training animals to encouraging persistence in human tasks. It has been studied extensively within behavioral psychology, tracing back to B.F. Skinner’s work on operant conditioning and schedules of reinforcement.

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8+ What is Short PR Interval? Definition & More

short pr interval definition

8+ What is Short PR Interval? Definition & More

The duration representing the time from the beginning of atrial depolarization to the beginning of ventricular depolarization, measured on an electrocardiogram (ECG), can sometimes be shorter than the generally accepted normal range. This abbreviated period signifies that the electrical impulse from the atria is reaching the ventricles more quickly than expected. A common example includes individuals with conditions that bypass the typical atrioventricular (AV) node delay.

Recognition of this electrocardiographic finding is important because it can be indicative of underlying cardiac abnormalities. Its identification is essential for appropriate diagnosis and management of potential arrhythmias. Historically, careful observation of ECG intervals has been a cornerstone of cardiac electrophysiology, providing clinicians with valuable insight into the heart’s electrical conduction system.

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