Maternal and paternal plasma, salivary, and urinary oxytocin and parent-infant synchrony: considering stress and affiliation components of human bonding

Studies in mammals have implicated the neuropeptide oxytocin (OT) in processes of bond formation and stress modulation, yet the involvement of OT in human bonding throughout life remains poorly understood. We assessed OT in the plasma, saliva, and urine of 112 mothers and fathers interacting with their 4-6-month-old infants. Parent-infant interactions were micro-coded for parent and child's social behaviors and for the temporal coordination of their socio-affective cues. Parents were interviewed regarding their attachment to the infant and reported on bonding to own parents, romantic attachment, and parenting stress. Results indicated that OT in plasma (pOT) and saliva (sOT) were inter-related and were unrelated to OT in urine (uOT). pOT and sOT in mothers and fathers were associated with parent and child's social engagement, affect synchrony, and positive communicative sequences between parent and child. uOT was related to moments of interactive stress among mothers only, indexed by the co-occurrence of infant negative engagement and mother re-engagement attempts. pOT and sOT were associated with mothers' and fathers' attachment relationships throughout life: to own parents, partner, and infant, whereas uOT correlated with relationship anxiety and parenting stress among mothers only. Similar to other mammals, OT is involved in human attachment and contingent parenting. The dual role of OT in stress and affiliation underscores its complex involvement in processes of social bonding throughout life.     

Hemispheric asymmetries in meaning selection: Evidence from the disambiguation of homophonic vs. heterophonic homographs

Research investigating hemispheric asymmetries in meaning selection using homophonic homographs (e.g., bank), suggests that the left hemisphere (LH) quickly selects contextually relevant meanings, whereas the right hemisphere (RH) maintains a broader spectrum of meanings including those that are contextually irrelevant (e.g., Faust & Chiarello, 1998). The present study investigated cerebral asymmetries in maintaining the multiple meanings of two types of Hebrew homographs: homophonic homographs and heterophonic homographs (e.g., tear). Participants read homographs preceded by a biasing, or a non-biasing sentential context, and performed a lexical decision task on targets presented laterally, 1000 ms after the onset of the sentence-final ambiguous prime. Targets were related to either the dominant or the subordinate meaning of the preceding homograph, or unrelated to it. When targets were presented in the LVF/RH, dominant and subordinate meanings, of both types of homographs, were retained only when they were supported by context. In a non-biasing context, only dominant meanings of homophonic homographs were retained. Alternatively, when targets were presented in the RVF/LH, priming effects for homophonic homographs were only evident when meanings were supported by both context and frequency (i.e., when context favored the dominant meaning). In contrast, heterophonic homographs resulted in activation of dominant meanings, in all contexts, and activation of subordinate meanings, only in subordinate-biasing contexts. The results challenge the view that a broader spectrum of meanings is maintained in the right than in the left hemisphere and suggest that hemispheric differences in the time course of meaning selection (or decay) may be modulated by phonology.     

Hemispheric sensitivities to lexical and contextual information: evidence from lexical ambiguity resolution

The present study examined the manner in which both hemispheres utilize prior semantic context and relative meaning frequency during the processing of homographs. Participants read sentences biased toward the dominant or the subordinate meaning of their final homograph, or unbiased neutral sentences, and performed a lexical decision task on lateralized targets presented 250ms after the onset of the sentence-final ambiguous prime. Targets were either related to the dominant or the subordinate meaning of the preceding homograph, or unrelated to it. Performance asymmetry was found in the absence of a biasing context: dominant-related targets were exclusively facilitated in the RVF/LH, whereas both dominant- and subordinate-related targets were facilitated in the LVF/RH. Performance symmetry was found in the presence of a biasing context: dominant-related targets were exclusively activated in dominant-biasing contexts, whereas both dominant- and subordinate-related targets were facilitated in subordinate-biasing contexts. The implications of the results for both general and hemispheric models of word processing are discussed.     

Young Israelis' Reactions to National Trauma: The Rabin Assassination andTerror Attacks

This study examined the cognitive and emotional reactions of 477 Israeli high school students to the assassination of Prime Minister Yitzhak Rabin (immediately after the event as well as 5 months later) and to a series of terror attacks. The respondents' reactions to the two events were compared as a function of gender and political orientation. About 50% of the respondents who changed their political views immediately after the assassination reverted to pre-event attitudes 5 months later. Emotional reactions to the assassination showed substantial fading after 5 months, with extent of fading unaffected by gender or political orientation. The intensity of emotional reactions was affected by political orientation: Although Rabin's supporters and his opponents reacted with equal intensity to the terror attacks, supporters reacted with the same intensity to Rabin's assassination, whereas opponents' reactions to the assassination were less intense.     

Sense of Coherence, Ways of Coping, and Well Being of Married and Divorced Mothers

The study examines sense of coherence and ways of coping as personality resources capable of helping divorced mothers deal with the divorce crisis. The findings show that although mothers from two parent families enjoy a higher sense of well being than divorced mothers, the well being of both groups was predicted by sense of coherence. They also show that mothers with higher sense of coherence used more effective coping strategies and derived more benefit from the strategies they used. The married and divorced mothers have a similar sense of coherence level. More study is needed to ascertain precisely how sense of coherence contributes to well being, as well as to the choice and effectiveness of coping strategies.     

Eating Attitudes and Dieting Behavior Among Religious Subgroups of Israeli-Arab Adolescent Females

Objectives The aim of the study was to compare the eating attitudes and behaviors, including weight concerns and dieting behavior, among three religious subgroups (Moslems, Druze, and Christians) and three age subgroups (12–13, 14–15, and 16–18 years old) of Israeli-Arab adolescent females. Methods The sample consisted of 1141 Israeli-Arab adolescent females, including 926 (81.2%) Moslem, 128 (11.2%) Christian, and 87 (7.6%) Druze schoolgirls in the seventh to twelfth grades. Participants were assessed using the EAT–26 questionnaire. Results The results showed that 75% of the students had a negative EAT-26 score (>20) and that 25% of the students had a positive EAT-26 score (<20). No significant differences were found in total scores, subscale scores, or scores above 20 between the age subgroups or the religious subgroups. The results demonstrated a high prevalence of disturbed eating attitudes and behaviors among Israeli-Arab adolescent schoolgirls. Discussion Higher prevalence of disturbed eating attitudes found among Israeli-Arab schoolgirls as compared to their Jewish counterparts. Although our sample is a communal based, there still remains an open question as to why the desired “slenderness culture” evident in the results is not reflected in the number of ED clinic referrals, among clinical population. These discrepancies were discussed in light of ethnicity-specific factors that may influence the perceived severity of eating disorders and the receptiveness of primary practitioners to address them.     

Predictors of Parental Communication and Cooperation Among Divorcing Spouses

The present study seeks to identify parental communication and cooperation as predictors of successful co-parenting in Israel during the divorce process. Self-report questionnaires assessing three types of predictors (parent personality characteristics, social and contextual factors and child characteristics) were completed by 123 divorcing mothers and 94 divorcing fathers. Two stepwise hierarchical regressions, one for parental communication and one for cooperation, showed that gender (female) and use of negotiation to resolve conflicts were the major predictors of both. These variables affected co-parenting both independently and in interaction with the personality characteristics of defense mechanism use and optimism. The differential contributions support the hypothesis of communication and cooperation as separate components of successful co-parenting, and the value of studying both. Clinically, these findings may be used to help improve co-parenting during divorce.