An inexpensive new device to provide random rewards for behavioral studies

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Updated: Sep 30, 2026

Novel Object Exploration as a Potential Assay for Higher Order Repetitive Behaviors in Mice
08:28

Novel Object Exploration as a Potential Assay for Higher Order Repetitive Behaviors in Mice

Published on: August 20, 2016

S D Johnson1, J C Firrell

  • 1Christine M. Kleinert Institute for Hand and Micro Surgery, Louisville, KY 40202, USA.

Physiology & Behavior
|April 2, 1998
PubMed

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Randomized Experiments01:13

Randomized Experiments

The randomization process involves assigning study participants randomly to experimental or control groups based on their probability of being equally assigned. Randomization is meant to eliminate selection bias and balance known and unknown confounding factors so that the control group is similar to the treatment group as much as possible. A computer program and a random number generator can be used to assign participants to groups in a way that minimizes bias.
Simple randomization
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Primary and Secondary Reinforcers

In psychology, reinforcement is a key concept in behavior modification. B.F. Skinner demonstrated this with his experiments involving rats in what is known as a Skinner box. The rats learned to press a lever to receive food, a primary reinforcer that fulfilled their innate need for nourishment.
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Reinforcement Schedules

Positive reinforcement is a powerful method for teaching new behaviors to both animals and humans. B.F. Skinner demonstrated this with his experiments using rats in a Skinner box. When a rat pressed a lever, it received a food pellet. This immediate reward encouraged the rat to repeat the behavior. This method, where a reward follows every instance of the behavior, is known as continuous reinforcement. It is highly effective for establishing new behaviors quickly.
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