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Biomedical subjects

M E Lamb

Publications and source records attributed to M E Lamb.

66 records · Page 4Linked to original sources
PubMed1978

Sex differences in responsiveness to infants: a developmental study of psychophysiological and behavioral responses.

Sex differences in responsiveness to infants were investigated by comparing physiological responses to infants with overt behavioral reactions. The former were assumed to be more biologically determined than the latter whereas overt behavioral responsiveness was presumed to be more affected by societal norms than were psychophysiological indices. The subjects were boys and girls in middle childhood and early adolescence. Psychophysiological indices showed that children, like parents, responded differentially to infant smiles and cries. As predicted, there were no sex differences on psychophysiological measures of responsiveness to babies. When permitted to interact with a baby, however, girls interacted more and ignored less than boys did. The results suggest that sex differences in overt responsiveness to babies are attributable to societal pressures rather than innate factors. Sex differences appear to wax and wane depending on the salience of sex stereotypy in differing developmental phases.

Adolescent↗
PubMed1978

The development of sibling relationships in infancy: a short-term longitudinal study.

24 infants and their preschool-aged siblings were observed in a laboratory playroom in the presence of their parents. Observations took place when the infants were 12 months old and again 6 months later. Analysis of the social behavior revealed that, at both ages, the children assumed differentiable roles in their interactions: The infants "followed" by observing and imitating while the preschoolers "led" by drawing the infants' attention and by assertive dominance. Over time, infants became increasingly willing to direct social behaviors toward their siblings. There was remarkable behavioral stability across time, with the infants' early propensities seemingly causally related to later pre-schoolers' behavior. Older girls directed more social behaviors to siblings than boys did. The amount of parent-directed behavior was affected by the number of adults present, whereas the amount of sibling-directed behavior was unaffected.

Child Development↗
PubMed1976

Parent-infant interaction in 8-month-olds.

Twenty 8-month-olds were observed interacting with their parents in a structured laboratory situation. Their responses to separations from each parent and the entrance of a strange adult were recorded. These events did not result in the predicted intensification of parental preferences. Before and after the "stressors," infants showed slight and equivocal preferences for their mothers over their fathers. Implications are briefly described.

Age Factors↗
PubMed1976

Infant approach behavior as related to attachment.

The chief purpose of this study was to identify characteristics that distinguish approach as an attachment behavior from approach serving other behavioral systems. Locomotor approaches of 16 male and 10 female white middle-class infants to an attachment figure (the mother) and to a nonattachment figure (the visitor-observer) were examined under naturalistic conditions at home. Observations were made during 4-hour home visits at 3-week intervals; those from 26 to 54 weeks were used. When approach was examined in a free-choice situation and without regard to behavioral context, infants approached the mother proportionally (though slightly) more often than the visitor (p less than .05). In 2 behavioral contexts, however, spontaneous infant approaches were sharply differential to the mother; approaches accompanied by crying and approaches terminating in a pickup appeal were directed almost exclusively to the mother (p less than .0001 for both). Touching upon completion of the approach was not differential, except in the context of a pickup appeal. Object-oriented approaches were more often directed to the visitor than to the mother (p less than .002) and may be either exploratory or affiliative. It is suggested that neither approach nor touching can be assumed to serve the attachment system without consideration of context- both environmental and behavioral.

Child Behavior↗
PubMed1975

The sociability of two-year-olds with their mothers and fathers.

Twenty-one two-year-olds were observed interacting with their parents in a laboratory playroom. Previously reported analyses had found that they displayes no preferencd for interaction with either parent. The present analysis found that there was a high degree of correlation between the sociability of the cild with his mother and his sociability with his father. Possible implications of this finding are discussed.

Adult↗
PubMedDate not supplied

Fatherhood in the twenty-first century.

The twentieth century has been characterized by four important social trends that have fundamentally changed the social cultural context in which children develop: women's increased labor force participation, increased absence of nonresidential fathers in the lives of their children, increased involvement of fathers in intact families, and increased cultural diversity in the U.S.. In this essay, we discuss how these trends are changing the nature of father involvement and family life, and in turn affecting children's and fathers' developmental trajectories. We end with an eye toward the twenty-first century by examining how the children of today will construct their expectations about the roles of fathers and mothers as they become the parents of tomorrow. This life-span approach to fatherhood considers the broader sociohistorical context in which fatherhood develops, and emphasizes the urgent need to consider mothers, fathers, and family structure in future research as we seek to understand and model the effects of parenting on children's development.

Child↗
PubMedDate not supplied

Effects of age and delay on the amount of information provided by alleged sex abuse victims in investigative interviews.

A total of 145 children of 4 to 5, 6 to 7, 8 to 9, and 10 to 12 years of age were interviewed within 3 days, 1 month, 1 to 3 months, or 5 to 14 months after allegedly experiencing a single incident of sexual abuse. The proportion of substantive investigative utterances eliciting new details from the children increased with age and decreased after delays of more than 1 month. Age (but not delay) was also associated with the length and richness of informative responses to individual investigative utterances of all types. Children were more likely to provide new details in response to option-posing and suggestive prompts. As in previous field studies, interviewers employed few open-ended prompts, and thus only 5% of the information obtained was elicited using free-recall prompts.

Child↗
PubMedDate not supplied

Determining the need for a refresher course. Report of a study.

This article describes findings from a survey of inactive nurses regarding their needs for a refresher course. The study revealed some general information about these inactive nurses. A large number of respondents indicated interest in home study options and requested information about continuing their academic studies.

Adult↗
PubMedDate not supplied

The cardiovascular response to acoustic stimuli.

The purposes of this investigation were to determine whether adults display alterations of cardiac rate under acoustical stimulus conditions and whether such alterations are influenced by signal level. The stimulus consisted of a narrow band of noise centered at 1 000 Hz and presented at 20, 40, 60 and 80 dB SPL. The stimulus was found to produce alterations of heart rate significantly different from variation under non-stimulus conditions, indicating that cardiovascular responses occurred. However, the responses themselves were unaffected by differences of sound pressure level.

Acoustic Stimulation↗