Project Gutenberg's The Mental Life of Monkeys and Apes, by Robert M. Yerkes
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Title: The Mental Life of Monkeys and Apes
A Study of Ideational Behavior
Author: Robert M. Yerkes
Release Date: January 27, 2004 [EBook #10843]
Language: English
Character set encoding: ASCII
*** START OF THIS PROJECT GUTENBERG EBOOK MENTAL LIFE OF MONKEYS ***
Produced by Michael Oltz and PG Distributed Proofreaders
The Mental Life of Monkeys and Apes:
A Study of Ideational Behavior
ROBERT M. YERKES
Harvard University
BEHAVIOR MONOGRAPHS
Volume 3, Number 1, 1916
Serial Number 12
Edited by JOHN B. WATSON
The Johns Hopkins University
WITH SIX PLATES AND FIVE TEXT FIGURES
CONTENTS
I. Interests, opportunity and materials
II. Observational problems and methods
III. Results of multiple-choice experiments:
1. Skirrl, _Pithecus irus_
2. Sobke, _Pithecus rhesus_
3. Julius, _Pongo pygmaeus_
IV. Results of supplementary tests of ideational behavior:
1. Julius, _Pongo pygmaeus_:
Box stacking experiment
Box and pole experiment
Draw-in experiment
Lock and key test
2. Skirrl, _Pithecus irus_:
Box stacking experiment
Box and pole experiment
Draw-in experiment
Hammer and nail test
Other activities
3. Sobke, _Pithecus rhesus_:
Box stacking experiment
Draw-in experiment
Box and pole experiment
Other activities
V. Miscellaneous observations:
1. Right- and left-handedness
2. Instinct and emotion:
Maternal instinct
Fear
Sympathy
VI. Historical and critical discussion of ideational behavior in
monkeys and apes:
1. Evidences of ideation in monkeys
2. Evidences of ideation in apes
VII. Provision for the study of the primates and especially the monkeys
and anthropoid apes
VIII. Bibliography
I
INTERESTS, OPPORTUNITY AND MATERIALS
Two strong interests come to expression in this report: the one in the
study of the adaptive or ideational behavior of the monkeys and the
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