Differential observing responses (DORs) are additional response requirements used to promote orientation to a stimulus in a discrimination task. Farber and Dickson (2023) recently provided a DOR taxonomy, and these authors reported that no prior research has compared the effects of distinct DOR requirements. We compared the effects of two DOR…

Presents two experiments which examined: (1) the tendency to make differential cue-producing responses to the values of dimensions that vary within or between settings; and (2) the hypothesis that children have more experience with problems following a two-choice simultaneous discrimination format than a successive one. Subjects were third- and…

Investigates third- and fourth-grade children's verbal evaluations of syllables paired with different reward schedules (full, partial, or none) for "pleasantness" and "curiosity." (Author/ED)

The two experiments investigated stimulus novelty which may affect reward and nonreward in a discrimination learning situation at different ages. The first experiment compared two types of "trial one" stimulus procedures on error tendencies following reward and nonreward. The two procedures differed with respect to novelty effects. One group was…

This study tested the prediction that a satiation effect would be observed only for noncontingent social stimuli, and not for groups presented with contingent stimuli. (Author/SB)

Study attempts to clarify the attentional versus perceptual learning functions of presence of the discriminative stimuli during delay. (Authors)

Investigators in this study looked for conditions that can rapidly establish continuous stimulus control of continuous response variations, or "response mapping." Unlike previous research in stimulus control, where a single stimulus comes to control a single response, 36 5-year-old children received errorless discrimination training at…

This study tested the hypothesis that the reported increase in children's use of prepositional phrases when exposed to novel (inverted) prepositional phrases could be eliminated by discrimination training in two prepositional forms. (Author/MS)

Liniar functions fitted to the proportion of optional reversal shifts as a function of log CA were used to assess the effect of stimulus and training variables on the development of reversal-shift. (ST)