What is variable interval schedule?

Reinforcement is delivered for the frist response after a variable interval of time??

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  • 1 decade ago
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    It might be easier to compare Fixed Interval and Variable Interval in order to answer your question.

    Fixed Interval - set amount of time (bird gets a cracker every 10 minutes if it pushed the lever.)

    Variable Interval - no average time set (bird gets a cracker at some point after it pushes the lever, but the time varies)

    Bird pushes lever = cracker in 20 minutes

    Bird pushes lever = cracker in 7 minutes

    Bird pushes lever = cracker in 11 minutes

  • 1 decade ago

    Variable interval (VI) schedules deliver reinforcement for the first response after a random average length of time passes since the last reinforcement.

    Example: VI3" = reinforcement is provided for the first response after an average of 3 seconds since the last reinforcement.

    Lab example: VI10" = a rat is reinforced for the first bar press after an average of 10 seconds passes since the last reinforcement.

    Real world example: a predator can expect to come across a prey on a variable interval schedule

  • cat
    Lv 5
    1 decade ago

    OMG i'm having FLASHBACKS from statistics class!!!!

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