Neonatal gonadal hormones: effect on maternal and sexual behavior in the female rat.
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Age Factors↗
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Behavioral development and maternal care in tufted capuchins (Cebus apella) and squirrel monkeys (Saimiri sciureus) from birth through seven months.
Fourteen infant capuchins and eight squirrel monkeys reared by their mothers in captive species-typical social groups were observed from birth through 7 months. Motoric altriciality of the neonatal capuchin relative to the squirrel monkey is a key feature of behavioral differences between the species in the first few months after birth. Infants of the two species differed substantially in age at onset of independent locomotion, the developmental profile of independent activities, and the overall amount and rate of particular social activities. Capuchins displayed a lag of 7 weeks relative to squirrel monkeys in the pattern of increasing time spent alone; lags in other indices of independent activity and exploratory behaviors were also evident, although not as clear-cut. The species also differed substantially in the nature and frequency of social interactions between infants and others. Capuchins, especially later-born infants of multiparous mothers, experienced a more socially interactive infancy than squirrel monkeys. Contrasts in behavioral developmental and infant care in the two species are related to the timing and duration of the weaning process.
Age Factors↗
Maternal and child behaviors: a review of data from the Berkeley Growth Study.
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Adolescent↗
The relationship between maternal confidence and mother-infant behaviors in premature infants.
The purpose of this study was to investigate the relationship between maternal confidence in mothers of premature infants, maternal behaviors and skills, and infant temperament. The relationship between certain prenatal and background variables and maternal confidence also was assessed. The sample consisted of 49 mother--infant pairs from low socioeconomic backgrounds who were followed for 8 months. Maternal behaviors were assessed in the neonatal intensive care unit and during 4- and 8-month follow-up visits at home. Infant temperament was assessed using the Bates Infant Characteristics Questionnaire. The results revealed that maternal confidence was related to education, income, and parity as well as the presence and severity of intraventricular bleed. There was no relationship between observed maternal behaviors and skills and perceived confidence by mothers. Maternal confidence was related to infant temperament ratings.
Adaptation, Psychological↗
Mutual influence of the maternal hen's food calling and feeding behavior on the behavior of her chicks.
It is widely accepted that brooding hens attract their chicks to food by food calling, but until now, the concurrent behavior of hens and chicks has never been investigated in depth. This study provides a detailed analysis of both the behavior of brooded chicks and the distance to their mother in relation to her feeding sequences, and whether they contained food calling. Our results revealed that brooding hens utter food calls while pecking, especially when their chicks are not feeding and/or have been at some distance for several seconds. Chicks' response to their mother's feeding activities was more pronounced in the presence than in the absence of food call. Chicks responded to this call by approaching their mother and increasing their pecking; their response became more efficient as they grew older. We thus consider food calls as an arousal vocalization that directs the chicks' attention to a food item chosen by a hen.
Age Factors↗
The effects of a social support group on depression, maternal attitudes and behavior in new mothers.
The present study examined the effects of a postpartum Social Support Group intervention on mood state, attitudes and behavior of new mothers. Intervention conditions consisted of an eight session Social Support intervention (n = 44), a no intervention condition (n = 83) and a Group-by-Mail intervention (n = 15). Attitudinal and behavioral assessments were made before and after the interventions at 6 and 20 weeks postpartum, respectively. The primary results indicate that regardless of intervention condition mothers undergo an improvement in mood from 2 weeks to 5 months postpartum. Although the Social Support intervention did not alleviate maternal depression and, in fact, may be detrimental to depressed mothers' self-confidence, it did increase mothers' proximal attention to their infants.
Adult↗
Cultural differences in maternal beliefs and behaviors: a study of middle-class Anglo and Puerto Rican mother-infant pairs in four everyday situations.
This study examines cultural patterning in situational variability in mother-infant interactions among middle-class Anglo and Puerto Rican mothers and their 12 to 15-month-old firstborn children. Forty mothers were interviewed regarding their long-term socialization goals and childrearing strategies, and videotaped interacting with their infants in four everyday settings: feeding, social play, teaching, and free play. Results suggest that: (1) Anglo mothers place greater emphasis on socialization goals and childrearing strategies consonant with a more individualistic orientation, whereas Puerto Rican mothers place greater focus on goals and strategies consistent with a more sociocentric orientation; (2) coherence was found between mothers' childrearing beliefs and practices, with Puerto Rican mothers more likely to directly structure their infants' behaviors; and (3) situational variability arose in mother-infant interactions, but this variability showed a cultural patterning consistent with mothers' long-term socialization goals and childrearing beliefs.
Adult↗
The influence of maternal intergenerational education on health behaviors of women in peri-urban Bolivia.
The influence of maternal education on infant mortality has been demonstrated repeatedly in health and social science literature. Less explored is the influence of the education level of the mother's mother. In the present paper the authors examine the possible effect of grandmother's education on maternal behaviors. The relationship between intergenerational education and selected health behaviors, including utilization of health services for prenatal care, breast-feeding and family planning, are reported. The data were collected in peri-urban Santa Cruz, Bolivia among mothers of infants between 0 and 18 months of age. It appears that grandmother's education does exert an effect on health behaviors above and beyond the effect of maternal education. This effect is more pronounced for health services which fall clearly in the domain of the formal health care system. While the results are exploratory, the results suggest the worth of further study and consideration of the influence of mothers' mothers in the design of culturally sensitive quality health services.
Adult↗
The effect of maternal hyperoxia on behavioral activity in growth-retarded human fetuses.
Thirteen pregnant women who subsequently were delivered of infants with birth weights less than the 3rd percentile were studied for examination of fetal heart rate and fetal activity patients during maternal administration of oxygen at a concentration of 50% or room air for 2 hours. None of the fetuses was acidotic at birth. Maternal transcutaneous PO2 levels increased from 79 +/- 3 mm Hg to 158 +/- 10 mm Hg for the 2 hours of observation. The results indicated that maternal hyperoxia produced sustained fetal breathing activity that was almost 100% higher than that in room air (analysis of variance, p = 0.024). Gross fetal body movements, fetal heart rate accelerations, and fetal heart rate variability increased significantly with increasing observation time (analysis of variance, p less than 0.01), but were not significantly altered by maternal hyperoxia or room air. We conclude that despite significant change in fetal breathing activity, ultrasonographic observation of fetal behavioral activity during maternal hyperoxia could not be used to differentiate severely growth-retarded from normally grown human fetuses. We speculate that altered fetal heart rate and fetal body movement patterns usually associated with intrauterine growth retardation might be related to altered development of the fetal central nervous system and are not reversible during prolonged maternal administration of oxygen.
Analysis of Variance↗
The effect of early contact on maternal perception of infant behavior.
The effect of extra maternal-infant contact during the first postpartum hour on maternal perception of infant behavior one month after delivery was measured by the Broussard Neonatal Perception Inventories and the attachment questions of Klaus and colleagues. All mothers were indigent primiparas who vaginally delivered normal, term infants. 60 mother-infant dyads were randomly assigned to either an extra contact or routine contact group. 49 mothers were available 1 month later for home visits. Scores on the Neonatal Perception Inventories were not significantly affected by either degree of contact or the sex of the child. There was also no difference between contact groups in the maternal response to the attachment questions. Infant behaviors recorded by 24 mothers during the 4 days following home visits were similar in the 2 contact groups. Mothers reported significantly more negative behaviors for female than for male infants. Any effects of extra contact during the first hour after birth on maternal-infant interaction are unlikely to result from changes in maternal perception of infant behavior.
Adolescent↗
The structure of mother-child play: young children with Down syndrome and typically developing children.
This study explored developmental changes and effects of Down syndrome on mothers' structuring of their children's play. Mothers and their young children with Down syndrome (n = 28) were compared with socioeconomically matched samples of mothers and their mental age-matched (n = 28) and chronological age-matched (n = 28) typically developing children. Mothers of typically developing children exhibited more object demonstrations with their developmentally younger children, who exhibited less object play. Mothers of children with Down syndrome were more directive and supportive than were mothers of younger and older typically developing children, who did not differ in their frequencies of these behaviors. More maternal supportive object behavior was associated with more object play and vocalization by children with Down syndrome. Mothers and children in all 3 groups were contingently responsive to their partners' behavioral signals.
Child Development↗
The effects of varying environmental demands on maternal and infant behavior.
3 groups of macaque mother-infant dyads were observed while each lived in ecological settings that differed in their level of foraging demand and, hence, the amount of work each mother was required to perform to obtain her daily rations. 2 groups (LFD and HFD) lived in stable low- and high-demand environments, respectively. The third group (VFD) lived in a variable-demand environment in which 2-week periods of HFD and LFD conditions were alternated, without external cues. Observations suggested that VFD subjects were unable to predict or rapidly adapt to the biweekly changes in food availability. Whereas LFD adults scored lowest in dominance-related behaviors and highest in affiliative behavior (social grooming), VFD adults showed the highest levels of dominance patterns and the lowest levels of grooming. VFD infants showed the most sustained clinging to mother, the lowest levels of social play and exploration, the highest levels of affective disturbance, and repeated evidence of depression as the study progressed. These findings suggest that in monkeys, as in humans, when, because of competing demands, mothers are psychologically unavailable to their infants, attachments are less secure, normal development is disrupted, and psychopathological patterns are more likely to emerge.
Animals↗
Health-promoting behaviors through pregnancy, maternity leave, and return to work: effects of role spillover and other correlates.
Women's health-promoting behavior changes and their correlates across the transition to motherhood and return to work are insufficiently understood. The purpose of this study was to describe and compare women's health-promoting behaviors, particularly physical activity (PA), across these transitions. A prospective, observational design was employed to assess 243 female healthcare workers from 3 sites with regard to health-promoting behaviors, and their demographic (e.g., age, parity) and psychosocial (i.e., work-family role spillover) correlates. Forty-two participants were recruited while pregnant and re-assessed during maternity leave and upon return to work, and compared to 201 non-pregnant participants. No significant changes in health-promoting behaviors were observed from pregnancy through the postpartum. Pregnant participants reported better nutrition than comparison participants (p=.001), and were more likely to check their pulse when exercising (p=.004). During pregnancy, health-promoting behaviors were related to parental status, with first-time mothers engaging in more positive behaviors. Correlates of PA during maternity leave and return to work included family income and exercise history. Positive family-to-work spillover was significantly greater among pregnant women than among comparison participants (p<.001), and positive work-to-family spillover was related to greater PA upon return to work (p<.01). This study reveals little variability in health-promoting behaviors from the prenatal to the postpartum period. Both demographic and psychosocial factors have effects on health-promoting behaviors, and we must look to these correlates to promote increased PA.
Adult↗
The effect of maternal depression on maternal ratings of child behavior.
There have been continuing concerns about the extent to which maternal depression may influence maternal reports of child behavior. To examine this issue, a series of structural equation models of the relationships between maternal depression and errors in maternal reports of child behavior was proposed and tested. These models assumed that (a) maternal depression was unrelated to maternal reporting behavior; (b) maternal depression causally influenced maternal reporting accuracy; (c) maternal depression was correlated with reporting accuracy. These models were fitted to data on maternal depression and multiple-informant (mother, teacher, child) reports of conduct disorder and attention deficit behaviors for a birth cohort of 12- and 13-year-old New Zealand children. The results of model fitting suggested the presence of small to moderate correlations (r = +.13 to +.40) between maternal depression and maternal reporting errors, indicating the presence of a tendency for increasing maternal depression to be associated with a tendency for mothers to over-report child behavior problems. However, independently of any effects of maternal depression on maternal reporting errors there was evidence of small but significant associations (r = .10 to .17; p < .05) between maternal depression and child conduct disorder and attention deficit behaviors.
Adolescent↗
Maternal regulation of infant reactivity from 2 to 6 months.
Previous research has investigated the effect of maternal soothing behaviors on reducing infant reactivity but not the differential effects of specific maternal behaviors on infant stress responses. The present study investigated maternal regulation of 2- and 6-month-olds' responses to an inoculation and found a significant decline with age in both the intensity and duration of infants' crying. Maternal affection and touching decreased from 2 to 6 months, whereas maternal vocalizing and distraction behaviors increased. At both ages, the combination of maternal holding/rocking and vocalizing was associated with decreases in all levels of infant reactivity. Neither strategy alone, however, was found to be effective. Feeding/ pacifying behaviors were effective only when initial distress was at a low or moderate level, which suggests that the effectiveness of maternal regulatory behaviors may depend on the intensity of infants' crying.
Adolescent↗
Early social isolation, but not maternal separation, affects behavioral sensitization to amphetamine in male and female adult rats.
Early life stressful manipulations, such as maternal separation (MS) or social isolation (SI), can influence the neurobiological development of rats and alter the response of adult animals to drugs of abuse. The present study examined the acute and sensitized behavioral responses (locomotor activity (LMA) and stereotypy) induced by amphetamine after MS or SI in male and female rats. In addition, the hypothesis that the combination of SI and MS could lead to additional effects on the behavioral response to amphetamine was tested. After the repetitive, intermittent administration of 1.5 mg/kg D-amphetamine over five consecutive days, the behavioral expression of sensitization to a challenge injection was assessed following a 2-day withdrawal period. In both sexes, MS and SI did not alter the acute locomotor activating effects of amphetamine as measured in the open-field environment after the first administration of the drug. Whereas SI altered the expression of sensitization to amphetamine in both sexes, MS did not affect it. Finally, in none of the behavioral variables measured did MS and SI interact to further modify the behavioral profile of the animals. The present results suggest that a postweaning manipulation of the environment (SI) is more effective than a preweaning manipulation (MS) in modifying the expression of sensitization to amphetamine.
Aging↗
Child neurocognitive and behavioral outcomes and maternal solvent exposure during pregnancy.
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Child↗
Increase in child behavior problems resulting from maternal smoking during pregnancy.
In this article, the authors investigated the effect of maternal smoking during pregnancy on behavioral problems, which were not mediated by lower birth weight, in offspring at 3 y of age. The authors used the Child Behavior Checklist for ages 2-3 y (CBCL/2-3; Achenbach, Edelbrock and Howell) to assess behavioral problems in 1,377 2- to 3-y-old healthy twin pairs. Soon after the birth of twins, the authors collected pre- and perinatal information, including smoking habits of the mother during pregnancy. The question "Did you smoke during pregnancy?" could be answered by choosing one of three possible options: (1) never, (2) sometimes, or (3) regularly. The authors analyzed the effect of maternal smoking on the Child Behavioral Checklist total score and on several subscale scores for first- and second-born twins separately, and they adjusted for the possible confounding effects of birth weight, socioeconomic status, maternal age, and having been breast- or bottle-fed. There was a significant effect of maternal smoking on so-called externalizing behavior problems (oppositional, aggressive, overactive), but not on internalizing behavior problems (withdrawn, depressed, anxious), in both first- and second-born twins. The authors primarily attributed the enhanced externalizing problems to increased aggression. Although boys had higher externalizing (and aggression) scores than girls, the effect of maternal smoking was the same for boys and girls. The authors also discuss whether maternal smoking causes externalizing behavior problems.
Birth Weight↗