F. ANGELL, Stanford University; H. BEAUNIS, Universities of Nancy and Paris; I. M. BENTLEY, Cornell University; A. F. CHAMBERLAIN, Clark University; C. F. HODGE, Clark University; A. KIRSCHMANN, University of Toronto; O. KUELPE, University of Würzburg; W. B. PILLSBURY, University of Michigan; A.

D. WALLER, University of London;

M. F. WASHBURN, Vassar
College.

VOL. XVII.

CLARK UNIVERSITY, WORCESTER, MASS.

FLORENCE CHANDLER, Publisher.

1906.

TABLE OF CONTENTS.

Alma Bell and LORETTA MUCKENHOUPT,

A Comparison of Methods for the Determination of

Ideational Type,

I. MADISON BENTLEY,

The Psychology of Organic Movements,

121-126

293-305

ALVIN BORGQUIST,

Crying,

149-205

CHARLES E. BROWNE,

The Psychology of the Simple Arithmetical Processes,
ALEXANDER F. CHAMBERLAIN,

I-37

Acquisition of Written Language by Primitive Peoples,

ALEXANDER F. AND ISABEL C. CHAMBERLAIN,

69-80

Hypnagogic Images and Bi-vision in Early Childhood,

272-273

C. E. FERREE,

An Experimental Examination of the Phenomena Usu-
ally Attributed to Fluctuation of Attention,

81-120

EUGENIA FOSTER AND E. A. McC. GAMBLE,

The Effect of Music on Thoracic Breathing,

406-414

Accuracy in Handwriting, as Related to School Intelli-
gence and Sex,

394-405

Wundt's Doctrine of Psychical Analysis and the Psychi-
cal Elements, and Some Recent Criticism,

160287

206-226

LILLIEN J. MARTIN,

The Electrical Supply in the New Psychological Labo-
ratory at the Leland Stanford, Jr., University,

274-279

LORETTA MUCKENHOUPT AND ALMa Bell,

A Comparison of Methods for the Determination of

Ideational Type,

121-126

ELSIE MURRAY,

Peripheral and Central Factors in Memory Images of

Visual Form and Color,

227-247

JAMES P. PORTER,

Further Study of the English Sparrow and Other Birds;

248-271

The Habits, Instincts, and Mental Powers of Spiders,

THE AMERICAN

JOURNAL OF PSYCHOLOGY

Founded by G. STANLEY HALL in 1887.

VOL. XVII.

JANUARY, 1906.

No. I.

THE PSYCHOLOGY OF THE SIMPLE ARITHMETI-
CAL PROCESSES: A STUDY OF CERTAIN HAB-
ITS OF ATTENTION AND ASSOCIATION.

Even Numbers,

Relation of the Size of the Digit Added to the Diffi-

culty of Combining,

The 'Teens,

Page.

23334566777

8

IO

II

12

13

13

14

15

15

15

16

17

20

20

20

20

20