منابع مشابه
: ) ' ( - ~ Sameness - Difference Judgments in Saimiri Sciureus
The rationale was to apply Piaget's theory and methods to the study of the phylogenetic development of cognitive abilities. It was asked whether squirrel monkeys have the prerequisite skills for conservation of quantity, and, specifically, whether they might respond differentially to equivalent and· unequivalent volumetric cues. All monkeys responded significantly and differentially to pairs of...
متن کاملSeasonality in squirrel monkeys (Saimiri sciureus): social facilitation by females.
The extent to which social living arrangements influenced seasonal changes in physiology and behavior was examined in adult squirrel monkeys (Saimiri sciureus). Data were collected over 20 months (encompassing two breeding seasons) from animals that were housed in three mixed-sex social configurations that varied in the number of heterosexual and isosexual social partners. For both sexes, the p...
متن کاملHorizontal transmission of Toxoplasma gondii in squirrel monkeys (Saimiri sciureus).
The possibility of horizontal transmission of T. gondii was examined in squirrel monkeys. After three monkeys were inoculated perorally with 1.1-2.1 x 10(3) cysts of the T. gondii ME49, the animals were divided into two cages and maintained with one normal monkey for each cage as a cagemate. Two out of the three T. gondii-inoculated monkeys died, and the remaining one monkey was sacrificed in a...
متن کاملAnnual physiological changes in individually housed squirrel monkeys (Saimiri sciureus).
This study investigated whether annual changes in physiology occur in individually housed squirrel monkeys (Saimiri sciureus). Physiological measures were monitored for 20 months. Over the course of the study, all individually housed males and females exhibited clear annual changes in gonadal and adrenal hormone levels, and males exhibited species-typical changes in body weight. Females exhibit...
متن کاملA comparison of personality in the common and Bolivian squirrel monkey (Saimiri sciureus and Saimiri boliviensis).
Personality has been studied in all of the great apes, many Old World monkey species, but only a handful of New World monkey species. Because understanding the personalities of New World monkeys is crucial to understanding personality evolution in primates, we used the Hominoid Personality Questionnaire to assess personality in 55 common squirrel monkeys (Saimiri sciureus) and 40 Bolivian squir...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Psychonomic Science
سال: 1965
ISSN: 0033-3131,2197-9952
DOI: 10.3758/bf03343151