The aims of the paper are to demonstrate the weaknesses of various applications of the chi-
square test and to describe clearly the conditions under which the test may be used …

Keller and Shoenfeld's Principles of Psychology, published in 1950, was written as an
introductory text to be used in the two-semester Psychology 1-2 course at Columbia …

Mounting evidence shows interaction between manipulative hand movements and
movements of tongue, lips and mouth in a vocal and non-vocal context. The current article …

Sex differences in cognitive skills, grouped into three areas—motor, spatial, and linguistic—
are assessed in the context of current notions of cerebral lateralization (Buffery and Gray …

Method Mothers of the 24 infants in the experimental group were instructed to spend 15 or
20 minutes each day reading stories to their children from illustrated children's story books, 1 …

There has appeared in the literature considerable evidence indicating that American white
boys are slightly later than girls in practically all aspects of language development which …

Abstract The Sound Spectrograph (developed recently by the Bell Telephone Laboratories)
was employed in this study to analyze samples of one infant's vocalizations during the first …

Auditory evoked potentials (AEPs) were obtained to probe tones which were delivered
during the presentation of complex verbal and nonverbal auditory stimulation to 3-month-old …

IN PREVIOUS REPORTS (5, Z) analyses of the speech sound status of infants have been
made in terms of age norms. The problem of sex differences also was reported (5, 2). A …

In this article, the author examines the empirical evidence in support of the widely
acknowledged stereotype that women and girls speak better than men and boys, restricting …