Aging and posture in the memory of manipulable objects

ABSTRACT

Thirty healthy elderly participants (mean age = 77.3) learned the names of manipulable and nonmanipulable objects while adopting a control posture (hands in front of them) or an interfering posture (holding their hands behind their back). Results on a recall task showed a postural interference (PI) effect, with the interfering posture reducing the memory of manipulable objects, but not of nonmanipulable ones. The effect was similar to the Postural Interference effect previously observed in young adults, although with a lower performance. These results call into question the embodied theory hypothesis that the deterioration of memory in aging is related to the decline of the sensorimotor system.     

Differentiation of Self Predicts Life Satisfaction through Marital Adjustment

Abstract

Previous studies have documented the link between differentiation of self and life satisfaction. However, the underlying mechanisms explaining these associations are yet to be tested at the dyadic level. This study examined the mediating role of marital adjustment in the association between differentiation of self and life satisfaction among 113 Turkish heterosexual married couples (N?=?226). Analyses using the Common Fate Model demonstrated that differentiation of self was associated with higher levels of marital adjustment and life satisfaction, such that marital adjustment was positively associated with life satisfaction, and in turn, marital adjustment fully mediated this association. Implications are discussed for clinicians and cross-cultural researchers who seek to promote greater life satisfaction by targeting both differentiation and marital adjustment.     

Prenatal daily musical exposure is associated with enhanced neural representation of speech fundamental frequency: Evidence from neonatal frequency-following responses

Fetal hearing experiences shape the linguistic and musical preferences of neonates. From the very first moment after birth, newborns prefer their native language, recognize their mother's voice, and show a greater responsiveness to lullabies presented during pregnancy. Yet, the neural underpinnings of this experience inducing plasticity have remained elusive. Here we recorded the frequency-following response (FFR), an auditory evoked potential elicited to periodic complex sounds, to show that prenatal music exposure is associated to enhanced neural encoding of speech stimuli periodicity, which relates to the perceptual experience of pitch. FFRs were recorded in a sample of 60 healthy neonates born at term and aged 12–72 hours. The sample was divided into two groups according to their prenatal musical exposure (29 daily musically exposed; 31 not-daily musically exposed). Prenatal exposure was assessed retrospectively by a questionnaire in which mothers reported how often they sang or listened to music through loudspeakers during the last trimester of pregnancy. The FFR was recorded to either a /da/ or an /oa/ speech-syllable stimulus. Analyses were centered on stimuli sections of identical duration (113 ms) and fundamental frequency (F₀ = 113 Hz). Neural encoding of stimuli periodicity was quantified as the FFR spectral amplitude at the stimulus F₀. Data revealed that newborns exposed daily to music exhibit larger spectral amplitudes at F₀ as compared to not-daily musically-exposed newborns, regardless of the eliciting stimulus. Our results suggest that prenatal music exposure facilitates the tuning to human speech fundamental frequency, which may support early language processing and acquisition.

Research Highlights

• Frequency-following responses to speech were collected from a sample of neonates prenatally exposed to music daily and compared to neonates not-daily exposed to music.
• Neonates who experienced daily prenatal music exposure exhibit enhanced frequency-following responses to the periodicity of speech sounds.
• Prenatal music exposure is associated with a fine-tuned encoding of human speech fundamental frequency, which may facilitate early language processing and acquisition.

     

UNDERSTANDING THE SEXUALITY OF MEXICAN-BORN WOMEN AND THEIR RISK FOR HIV/AIDS

Participants in this study were 300 Mexican women of rural origin who were born and raised in villages of that country and who belong to one of three groups: married and living with their husbands in Los Angeles, California ( n = 100), married to migrant workers but living in Mexico ( n = 100), and living in Mexico with their spouses ( n = 100). Trained female professionals conducted face-to-face interviews in Spanish, in Mexico and in the United States. The purpose of this study was to identify specific sexual practices, coping strategies in sex-related situations, and fears and concerns regarding sexual intercourse. This article analyzes how these elements place Mexican ruralorigin women at risk for HIV/AIDS. It discusses the need to design intervention strategies to prevent HIV/AIDS that take into consideration the limited power of women in traditional societies and the cultural precepts that promote gender roles characterized by male dominance and female submissiveness in the sexual arena.     

Team adaptability and task cohesion as resources to the non-linear dynamics of workload and sickness absenteeism in firefighter teams

ABSTRACT

The current study builds on the non-linear Dynamic Systems (NDS) perspective to test the assumption that change in sickness absenteeism is non-linear, and that such change is due to workload, team adaptability and task cohesion. Participants were 37 firefighter teams (n = 250 individuals) from a main European capital city. The research hypotheses were tested using SPSS and the “cusp” package, in the statistical software R. The results suggest that change in sickness absenteeism behaviours over time is non-linear, with the cusp catastrophe model predicting such behaviours better than the linear and logistic models. In our model, task cohesion functions as an asymmetry factor (i.e., the independent variable that determines the strength and discrepancy between the two stable states of the dependent variable) leading to a linear change in sickness absenteeism. Interestingly, both workload and team adaptability function as bifurcation (i.e., the independent variable that determines the change between the two stable states of the order parameter) and asymmetry factors leading to non-linear and linear change in sickness absenteeism over time. This study contributes to the growing evidence that incorporating the NDS perspective enables a better understanding of action teams, namely those working in extreme environments.     

Early-life education may help bolster declarative memory in old age,especially for women

ABSTRACT

Although declarative memory declines with age, sex and education might moderate these weaknesses. We investigated effects of sex and education on nonverbal declarative (recognition) memory in 704 older adults (aged 58–98, 0–17 years of education). Items were drawings of real and made-up objects. Age negatively impacted declarative memory, though this age effect was moderated by sex and object-type: it was steeper for males than females, but only for real objects. Education was positively associated with memory, but also interacted with sex and object-type: education benefited women more than men (countering the age effects, especially for women), and remembering real more than made-up objects. The findings suggest that nonverbal memory in older adults is associated negatively with age but positively with education; both effects are modulated by sex, and by whether learning relates to preexisting or new information. The study suggests downstream benefits from education, especially for girls.     

Oedipus goes to the opera: Psychoanalytic inquiry in Enescu’s Œdipe and Stravinsky’s Oedipus Rex

Abstract

Psychoanalytic inquiry into operas based on the life of Oedipus may provide further knowledge on the Oedipus complex. Therefore, we chose to analyze Enescu’s ?dipe and Stravinsky’s Oedipus Rex. Two distinct methodologies were used in our study. The first explored the concept of free association through musical themes in the operas. The second involved the comparative study of the Oedipus myth in order to provide a deeper understanding of Oedipus’s character. We observed that Oedipus displayed symptoms of his complex through the traits of aggressiveness and arrogance. Moreover, we noticed that Oedipus was compelled by the necessity of finding out who his real parents were and by unconsciously accomplishing the prophecy. Oedipus assumed the responsibility to free the Thebans from plague. Yet, it was too late, for the feared part of the prophecy was already accomplished. He provided a wrong answer to the Sphinx and then received the most severe punishment, one that would have ostracism as its outcome. It was, however, not too late for Oedipus to finally discover who his real parents were. Nevertheless, afraid of losing his place as King of Thebes, he investigated the plague’s causes. This resulted in his aggression as he resisted discovering “where babies come from.”