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Hittelman, Joan H.; Dickes, Robert – Merrill-Palmer Quarterly, 1979
Examines the relationship between an infant's sex and its capacity to maintain eye contact. Subjects were 15 male and 15 female newborn infants. (MP)
Descriptors: Eye Fixations, Infant Behavior, Infants, Neonates
Goodwin, Rhoda S. – 1980
This study investigated the hypotheses that 1) infants delivered from a left occiput anterior or transverse position (LOA/LOT) would exhibit a right supine head orientation in the neonatal examination and a right hand preference at 19 weeks of age; and 2) infants delivered from a right occiput anterior or transverse position (ROA/ROT) would…
Descriptors: Birth, Human Posture, Infant Behavior, Longitudinal Studies
Peer reviewed Peer reviewed
Stamps, Leighton E. – Developmental Psychology, 1977
Descriptors: Classical Conditioning, Heart Rate, Infant Behavior, Neonates
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Molfese, Dennis; Molfese, Victoria J. – Developmental Psychology, 1979
Descriptors: Auditory Stimuli, Infant Behavior, Infants, Neonates
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Davis, Maryann; Emory, Eugene – Child Development, 1995
Examined the sex differences in physiological and behavioral stress reactivity among 36 healthy, full-term neonates after a mildly stressful behavioral assessment procedure. Salivary cortisol, heart rate change, Neonatal Behavior Assessment Scale (NBAS) cluster scores, and behavioral states after the NBAS provided 100% discrimination between male…
Descriptors: Females, Heart Rate, Infant Behavior, Males
Peer reviewed Peer reviewed
Ronnqvist, Louise; Hopkins, Brian – Child Development, 1998
Studied head position preference in 20 newborns differing by Cesarean or vaginal delivery and sex. Found that neither factor accounted for differences. The head turned right more often and was maintained longer in this position during quiet wakefulness, regardless of scoring method. When using global scoring, duration of midline position was…
Descriptors: Birth, Human Posture, Infant Behavior, Infants
Davis, Maryann – 1991
This study examined physiological and behavioral stress reactivity in perinates in order to determine whether sex differences exist before extensive socialization. Fetal plasma cortisol response to the stress of labor and delivery, and neonatal heart rate and salivary cortisol response to a Brazelton Neonatal Assessment (NBAS), were measured. Male…
Descriptors: Birth, Heart Rate, Infant Behavior, Motor Reactions
Peer reviewed Peer reviewed
Yang, Raymond K.; Moss, Howard A. – Developmental Psychology, 1978
Ninety-two clinically normal infants (48 male, 44 female) were tested at 2 and 90 days of age to examine the continuity of newborn behavior through early infancy across a broad range of behaviors. (MP)
Descriptors: Behavior Development, Factor Analysis, Infant Behavior, Infants
Peer reviewed Peer reviewed
Adkinson, Cheryl D.; Berg, W. Keith – Journal of Experimental Child Psychology, 1976
A total of 20 neonates were presented with mild intensity blue or blue-green light during presentation of habituation and dishabituation stimuli. Orienting and defensive responses were measured by monitoring heart rate deceleration. (GO)
Descriptors: Age Differences, Color, Heart Rate, Infant Behavior
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Rose, Susan A.; And Others – Developmental Psychology, 1976
In this study, an attempt was made to determine whether psychophysiological differences existed between 20 prematurely born and 20 full-term infants in their responsiveness to tactile stimulation and in their ability to discriminate among different intensities of such stimulation. (Author/SB)
Descriptors: Age Differences, Heart Rate, Infant Behavior, Infants
Peer reviewed Peer reviewed
Friedman, Steven; And Others – Journal of Experimental Child Psychology, 1974
Thirty-six newborn infants were exposed to a visual stimulus until habituation was demonstrated; subjects were then presented with the same target or one of either moderate or large discrepancy from the standard stimulus. Following habituation, female infants displayed greater recovery of attention to moderate stimulus change. (SDH)
Descriptors: Analysis of Variance, Attention Span, Infant Behavior, Memory
Peer reviewed Peer reviewed
Feldman, Judith F.; And Others – Merrill-Palmer Quarterly, 1980
Deals with sex differences in three types of nonelicited newborn behaviors, easily observable with the unaided eye: (1) states, (2) activity levels, and (3) several discrete behaviors such as spontaneous behavior and specific motor patterns. Subjects were 289 male and 272 female Black infants. (MP)
Descriptors: Blacks, Comparative Analysis, Infant Behavior, Infants
Lester, Barry M.; And Others – 1976
Based on findings that report differences between cries of normal and clinically abnormal infants, this study examined the relationship between birthweight and behavioral and acoustic features of neonatal cry because of the long-standing association between birthweight, perinatal trauma, and subsequent development. Subjects were 88 neonates…
Descriptors: Age Differences, Body Weight, Congenital Impairments, Diagnostic Tests
Peer reviewed Peer reviewed
Yang, Raymond K.; Halverson, Charles F., Jr. – Child Development, 1976
To test the inversion of intensity interpretation based on negative relations between newborn and pre-school intensity behaviors, 106 normal children were examined at the neonatal and pre-school periods. Interpretations of intensity behaviors at both periods and their longitudinal relations are discussed. (Author/SB)
Descriptors: Heart Rate, Infant Behavior, Infants, Longitudinal Studies
Riese, Marilyn L. – 1996
Irritability levels and activity reactivity to aversive tactile stimuli were compared for 144 full-term neonates and 191 preterm infants. Irritability ratings increased across the five trials both during and post stimulation for full-term females and males and for preterm females, but not for preterm males. Activity ratings decreased across trials…
Descriptors: Affective Behavior, Child Development, Comparative Analysis, Infant Behavior
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