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PubMed1974

Modulation of the copulatory sequence of the male rat by a schedule of reinforcement.

Copulating male rats were permitted a maximum of seven intromissions in which to ejaculate. This experimental constraint of the male rat's sexual behavior produced an increase in the number of sessions in which the male ejaculated before the seventh intromrission. This species-specific behavior pattern is therefore susceptible to environmental conditioning.

Animals↗
PubMedDate not supplied

The effects of initial interval size on the efficacy of DRO schedules of reinforcement.

The differential reinforcement of other behavior (DRO) is a behavior-reduction procedure that has been popular for several years. In classroom settings, it provides reinforcement when a student does not display inappropriate responding for a particular interval of time. Unfortunately, relatively little is known about how to use DRO effectively in applied settings. Most research has been conducted in laboratory settings; the purpose of the present study was to provide a replication of one of those studies. This study examined the effect of the size of the initial DRO interval on the disruptive behavior of students with moderate disabilities. In the first experiment, a group of six students was observed during baseline in two classes. Two different DRO values were then used. In one classroom, it was equal to the mean number of 10-second intervals between disruptions during baseline. In the other classroom, it was twice the mean number during baseline. In the final phase, behavior in both classrooms was put under the same DRO program. In the second experiment, the disruptive behavior of three students was studied in a different design in which both methods of determining the initial DRO value were compared. The results of both experiments showed that an initial DRO value equal to the mean number of intervals between responses in baseline was much more effective than a value twice that size in reducing disruptions.

Behavior Therapy↗