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PubMed1995

Parent-child relationship disorders. Part I. Parental overprotection and the development of the Parent Protection Scale.

There is a spectrum of parental protective behaviors promoting child safety and security, ranging from neglect to overprotection. This paper describes the development and psychometric properties of a new measure of parental protective behaviors toward children age 2 to 10 years, the Parent Protection Scale (PPS). Items were selected to represent key dimensions of protective behaviors. Factor analyses suggested four subscales: Supervision, Separation Problems, Dependence, and Control. The PPS has acceptable internal consistency, test-retest reliability, and clinical validity. Norms by child age in the form of cutoff points corresponding to +1 SD were determined. Clinical and research uses for the PPS are noted.

Child↗
PubMed1995

Parent-child relationship disorders. Part II. The vulnerable child syndrome and its relation to parental overprotection.

Parents who are excessively concerned about their child's health are often characterized as being overprotective. We hypothesized that parental overprotection is independent of parental perception of child vulnerability to illness or injury despite their presumed interchangeability. A community-based sample of 892 parents (92% white, 84% married, 88% middle-upper socioeconomic status, 90% mothers) completed a three-part protocol (clinical background data, the Child Vulnerability Scale, and the Parent Protection Scale). Correlates of high parental perception of child vulnerability included a medical condition in the child, a history of life-threatening illness or injury, and the child being seen for a sick visit. Correlates of high parental overprotection included younger age of child and parent. Only 20% of those parents who considered their child vulnerable were also considered overprotective.

Child↗
PubMed2005

Predictors of violent behavior in an early adolescent cohort: similarities and differences across genders.

The authors assessed a cohort of 2,335 students from the Minneapolis, Minnesota, area to identify predictors of violent behavior and to determine whether the predictors varied by gender. The sample was 76% White; boys and girls were equally represented. The majority lived with two parents. A measure of violent behavior collected at the end of the eighth-grade year (2000) was entered into Poisson regression against baseline data collected at the beginning of the seventh-grade year (1998). Predictors of violent behavior influencing both boys and girls included depressive symptoms, perceived invulnerability to negative future events, paternal nonauthoritative behavior, and drinking alcohol. Additional predictors of violent behavior specific to girls included both risk and protective factors.

Adolescent↗
PubMed2000

Paternal hamsters mechanically assist the delivery, consume amniotic fluid and placenta, remove fetal membranes, and provide parental care during the birth process.

We report the first description of a male mammal behaviorally participating in the birth of his young. Djungarian hamsters, Phodopus campbelli, are naturally biparental and males contribute to pup survival and growth through direct paternal care and indirect effects on maternal physiology. Males of the closely related Siberian hamster, P. sungorus, have only seasonal opportunities to interact with pups and neither contribute to pup survival and growth nor provide extensive paternal care under laboratory conditions. Male P. campbelli undergo a series of hormonal changes prior to the birth of their first litter which are not shared with P. sungorus males and may "prime" males to express paternal behavior. We hypothesized that P. campbelli males would behave paternally on first contact with pups during the birth process, whereas P. sungorus males would not. In addition to showing paternal behavior toward neonates, male P. campbelli licked amniotic fluid before the birth, mechanically assisted the delivery, opened an airway by clearing the nostrils (so that pups flushed red with oxygenation), licked and sniffed pups in the moments and minutes after birth to clean the pups of membranes, and ate the placenta. None of these behaviors were observed in P. sungorus. We anticipate that P. campbelli will not be the only species with highly developed paternal behavioral repertoires during the birth.

Amnion↗
PubMed1989

Fetal, hormonal and experiential factors influencing the mating-induced regulation of infanticide in male house mice.

When a male house mouse encounters a neonate he either attempts to kill it or he does not harm it. An unusual aspect of his response is that adaptive, time-dependent changes in behavior toward pups result from a unique stimulus-response system triggered specifically by ejaculation. In virgin male CF-1 mice, about 50% of all males are spontaneously infanticidal when they encounter a pup while the other 50% are typically "parental." The stimulus of ejaculation causes virtually all males to kill pups; however, by the time offspring are born three weeks after mating, infanticide is inhibited and almost all males now behave parentally toward pups. Our experiments examine fetal, experiential, and hormonal factors influencing the changes in infanticidal and parental behavior that occur in male mice as a result of mating. Males who developed in utero between two female fetuses, and were thus exposed to relatively low testosterone concentrations during fetal development, were significantly more likely to exhibit infanticide--both before and after mating--than were males who developed between two male fetuses. Concurrent exposure to testosterone appears required in order for naive males to exhibit infanticide and for spontaneously parental males to become infanticidal after ejaculation. In contrast, neither testosterone nor pituitary hormones appeared responsible for the timed inhibition of infanticide occurring by three weeks after mating, since castrated and hypophysectomized males showed a response pattern similar to intact males. The mating-induced inhibition phenomenon appears to be a neurally timed and mediated response that operates independently from pituitary hormone secretions or changes in gonadal hormones resulting from mating.

Aggression↗
PubMed1981

Parental reports of depressives. An investigation of several explanations.

Associations linking parental reports of low care and/or overprotection with several grades of depressive experience have been reported in a number of studies. Three non-causal explanations of those associations are examined in the present paper: that depression levels might influence judgement of parental characteristics, that reported parental characteristics may not reflect actual parental characteristics, and that those with a potentially depressive temperament of dependency might elicit less parental care and greater parental overprotection. Varying levels of depression in a clinical group did not influence scores on a self-report measure of parental characteristics, the Parental Bonding Instrument (PBI). Subjects' scores on the PBI (i.e. perceived parental characteristics) correlated significantly with scores returned by family observers and judges in 2 separate studies, supporting the validity of the PBI as a measure of actual parental characteristics. Depression scores in subjects were strongly linked with lower maternal care and with maternal overprotection, whether the maternal characteristics were judged by the subjects or by the mothers themselves. There was no evidence to support the view that those with marked dependency traits elicit different parental responses.

Adolescent↗
PubMedDate not supplied

Parental representations of neurotic and endogenous depressives.

Low parental care and parental overprotection have been incriminated as risk factors to depression in adult life. The relevance of these parental characteristics to broad depressive 'types' with their varying imputed aetiologies was assessed by having 26 patients with endogenous depression (ED) and 40 with neurotic depression (ND) complete the Parental Bonding Instrument (PBI) self-report measure. In comparison to their controls, the EDs did not differ on the parental care and overprotection scales. The NDs, by contrast, were more likely than their controls to report their parents as uncaring and overprotective. A PBI care scale score of less than 10 was particularly discriminating, being reported by 3.8% of the EDs and 37.5% of the NDs. While findings support the binary view of depression in terms of broad imputed aetiological factors, several response biases which might influence the findings are considered.

Adult↗
PubMed2001

Child maltreatment in the "children of the nineties" a longitudinal study of parental risk factors.

OBJECTIVE: To identify and validate factors within the parental background affecting risk of child maltreatment. METHOD: A nested case-control study based on the Avon Longitudinal Study of Parents and Children ("Children of the Nineties"), a cohort of children born in Avon in 1991 through 1992. Data on the childhood and psychiatric histories of the parents, along with other data on the social and family environments, have been collected through postal questionnaires from early antenatal booking onwards. RESULTS: Out of 14,138 participating children, 162 have been identified as having been maltreated. Using logistic regression analysis, significant risk factors within the mothers' backgrounds were age < 20; lower educational achievement; history of sexual abuse; child guidance or psychiatry; absence of her father during childhood; and a previous history of psychiatric illness. Significant factors in the fathers' backgrounds were age < 20; lower educational achievement; having been in care during childhood; and a history of psychiatric illness. Significant factors on univariate, but not multivariate analysis included a parental history of childhood physical abuse; divorce or separation of the mother's parents; a maternal history of having been in care, or separated from her mother; parental alcohol or drug abuse; and a maternal history of depression. CONCLUSIONS: This study, the first of its kind in the UK, supports the findings of others that parental age, educational achievement, and a history of psychiatric illness are of prime importance in an understanding of child maltreatment. With the exception of maternal sexual abuse, a history of abuse in childhood is not significant once adjusted for other background factors. The study suggests that psychodynamic models are inadequate to explain child maltreatment, and wider models incorporating other ecological domains are needed.

Adolescent↗
PubMed1998

Role of the vomeronasal input in maternal behavior.

This article reviews the role of the vomeronasal system in the induction of parental behavior in female and male rats, using, primarily, the sensitization model. The following questions are addressed: (1) Is the vomeronasal system sexually dimorphic? (2) Do the sex differences found in the VNS underlie those seen in behavior? (3) Do mechanisms, other than the classical 'organizational' effects of perinatal gonadal steroids, play a role in the organization of behavioral phenotypes in parental behavior? and (4) Does vomeronasal input play a role in the formation of the mother infant bond in humans? The first question has been answered throughout the 1980's in various studies of the organizational actions of postnatal exposure to gonadal steroids. The second aim has been addressed in a functional approach by lesion and neural activation studies. The experiments which lead us to consider the hypothesis that nonsteroidal factors in development, and specifically GABA, could account for the expression of parental care are reviewed. Finally, research relevant to the existence of a vomeronasal organ in humans and a possible pheromonal input in the formation of mother-infant bonds in humans is reviewed.

Animals↗
PubMed2002

Sry does not fully sex-reverse female into male behavior towards pups.

Investigations in mice suggest that the Y-chromosomal genes affect certain behaviors. Here, we studied whether a part of the Y chromosome, the Sxr locus, has an effect on induction of motivation for parental care (pup retrieval) or of parental aggression towards pups (infanticide). XX females, XX males with the Sxr locus on the X chromosome, and XY males of the C57BL/6J strain were tested. The induced pup retrieval or infanticide behaviors were genotype-dependent. XX mice always retrieved pups and never were infanticidal. On the first test, significantly more XY males (38%) than XX males (17%) were infanticidal. When the same animals were tested for a second time, all except one of the XX males retrieved pups. Overall, motivation for parental care was highest in XX females, followed by XX males, and lowest in XY mice. On the other hand, the incidence of infanticide was highest in XY males, lower in XX males, and absent in XX females. We conclude that the Sxr locus of the Y chromosome, when operating in a XX background, partially erases but does not fully defeminize motivation for pup retrieval. Further, it induces infanticide to a level higher than that of XX females but significantly lower than that of normal males (XY). Hence, we suggest that genes outside the sex-determining region of the Y chromosome and/or genes on autosomes are necessary for manifestation of full male-type parental behavior.

Animals↗
PubMed2002

Sexual offenders' perceptions of their early interpersonal relationships: an attachment perspective.

The present study examined the perceptions of early interpersonal experiences of sexual offenders (child molesters and rapists) and two criminal comparison groups. A grounded theory approach was applied to a comprehensive list of responses provided by the participants to questions about their early interpersonal experiences. The raw data was collapsed into 14 basic categories by grouping together responses of similar meanings. The categories were responsiveness, consistency, acceptance, boundaries, emotional regulation, autonomy, self-evaluation, developmental trauma, sexual abuse and deviation, physical abuse, loss, conflict, safety, and positive mediating interactions. In the second part of the study, the four groups were compared using the categories and the differences noted. All four groups experienced significantly negative early interpersonal experiences.

Adult↗
PubMed2005

The coadaptation of parental supply and offspring demand.

The evolution of parent-offspring interactions for the provisioning of care is usually explained as the phenotypic outcome of resolved conflicting selection pressures. However, parental care and offspring solicitation are expected to have complex patterns of inheritance. Here we present a quantitative genetic model of parent-offspring interactions that allows us to investigate the evolutionary maintenance of a state of resolved conflict. We show that offspring solicitation and parental provisioning are expected to become genetically correlated through coadaptation and that their genetic architecture is dictated by an interaction between patterns of selection and the proximate mechanisms regulating supply and demand. When selection is predominately on offspring solicitation, our model suggests that the genetic correlations between provisioning and solicitation are usually positive if provisioning reduces solicitation. Conversely, when selection is predominately on parental provisioning, the correlations are mostly negative as long as parents show a positive response to offspring demand. Empirical estimates of the genetic architecture of traits involved in family interactions fit these predictions. Our model demonstrates how the evolutionary maintenance of parent-offspring interactions can result in variable patterns of coadaptation, and it provides an explanation for the diversity of family interactions within and among species.

Adaptation, Physiological↗