## Abstract Squirrel monkey infants reared on surrogates showed an increase in vocalizations, but no change in plasma cortisol levels when the surrogate was removed from the home cage for .5 hr. When the infant was exposed to novelty during separation, there was a further increase in vocalizations,
✦ LIBER ✦
Effect of surrogate–administered punishment on surrogate contact in infant squirrel monkeys
✍ Scribed by Dr. Joel N. Kaplan
- Publisher
- John Wiley and Sons
- Year
- 1981
- Tongue
- English
- Weight
- 653 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0012-1630
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Squirrel monkeys were trained to press a key under a two-component schedule of food presentation. In the presence of either green or red stimulus lights, the 30th response produced a food pellet (fixed-ratio schedule). During the red stimulus lights (punishment component), the first response of each