Performance of rhesus monkeys on two-cue problems with cues separated

Abstract

Relative performance on color and form dimensions during acquisition of two-cue problems by learning-set-sophisticated rhesus monkeys was evaluated with differential reinforcement. Six animals received 24 two-choice problems, each generated from three planometric stimuli: a reference stimulus, an alternate stimulus identical in color bu t differing in form, and one identical in form but differing in color. The reference stimulus appeared on every trial of a problem and was paired with one or the other alternate on a given trial. On half of the problems, the reference stimulus was positive and on the remainder was negative. Acquisition was nearly equivalent on both cue dimensions with positive reference stimuli, but only one dimension was learned with negative reference stimuli. Results were interpreted as unfavorable to attention theory.

Rapid cognitive flexibility of rhesus macaques performing psychophysical task-switching

“…For example, because the WCST cannot be administered in its canonical form to a non-human, Moore et al (2002, 2003, 2005) developed a modified version of the WCST called the “Conceptual Set-Shifting Task” (CSST). The Stroop test is even more difficult to adapt given its linguistic requirements, and comparable animal studies focus on psychophysical competition between cues (Behar 1974; Washburn 1994). …”