Self-projection in younger and older adults: a study of episodic memory,prospection, and theory of mind

Self-projection is the ability to orient the self in different places in time and space. Episodic memory, prospection, and theory of mind (ToM) are all cognitive abilities that share an element of self-projection. Previous research has posited that each of these abilities stems from the same neural network. The current study compared performance of cognitively healthy older adults and younger adults on several self-projection tasks to examine the relatedness of these constructs behaviorally. Episodic memory and prospection were measured using an episodic interview task where the participants were asked to remember or imagine events that either had happened in the past or could happen in the future and then gave ratings describing the extent to which they were mentally experiencing the event and from what perspective they viewed it. ToM was measured by asking participants to make judgments regarding the intentions of characters described in stories that involved cognitive, affective, or ironic components. Our results demonstrate that aging influences episodic memory, prospection, and ToM similarly: older adult participants showed declines on each of these measures compared to younger adults. Further, we observed correlations between performance on the measures of episodic memory and prospection as well as between episodic memory and ToM, although no correlation between prospection and ToM was observed after controlling for chronological age. We discuss these results in the light of theories suggesting that each of these abilities is governed by a common brain system.     

Text‐message reminders plus incentives increase adherence to antidiabetic medication in adults with type 2 diabetes

Some adults with Type 2 diabetes mellitus have difficulty adhering to their oral medication regimens. The current study used a multiple baseline design with 3 adults with Type 2 diabetes. Medication taking was monitored remotely in real time via an electronic pill bottle. During the intervention, monetary incentives were delivered contingent on evidence of adherence to taking medication at specified times. Text‐message reminders were also sent if medication was not taken. Adherence increased for all participants. Future studies should separate the relative contributions of text‐message and incentive components of the intervention.     

The effects of phencyclidine and chlordiazepoxide on target biting of confined male mice

Target-biting of confined mice increases following delivery of tail shock and decreases during a tone that precedes the shock. Both phencyclidine and chlordiazepoxide reduced biting (dose dependently) following shock and had no effect on biting during the tone. These observations are discussed in reference to previous reports, which infer that the effects of phencyclidine and chlordiazepoxide on aggression might depend upon the baseline rate of the behavior.     

Caregiver Demand and Parent Distress in Juvenile Rheumatic Disease: The Mediating Effect of Parent Attitude Toward Illness

Parents of youth with juvenile rheumatic diseases (JRD) often take on illness management responsibilities that can become burdensome, potentially resulting in poor parent adjustment outcomes. However, not all caregivers will experience increased distress as a result of variability in stress appraisals. The current study examined the role of parent illness attitudes in the relation between perceived caregiver demand and parental distress. Youth (N = 70) ages 7–18 years diagnosed with a JRD and their parents were recruited from a pediatric rheumatology clinic. Parents completed measures of caregiver demand, parental distress, and illness attitudes. Hierarchical regression revealed a relationship between caregiver demand and parental distress. A significant relationship was also found between caregiver demand and parent illness attitudes, as well as parent illness attitudes and parental distress. Thus, parent illness attitudes mediated the relationship between caregiver demand and parental distress. Techniques aimed at altering negative illness attitudes may help parents cope with their caregiving responsibilities.     

Mouse vocal communication system: Are ultrasounds learned or innate?

Mouse ultrasonic vocalizations (USVs) are often used as behavioral readouts of internal states, to measure effects of social and pharmacological manipulations, and for behavioral phenotyping of mouse models for neuropsychiatric and neurodegenerative disorders. However, little is known about the neurobiological mechanisms of rodent USV production. Here we discuss the available data to assess whether male mouse song behavior and the supporting brain circuits resemble those of known vocal non-learning or vocal learning species. Recent neurobiology studies have demonstrated that the mouse USV brain system includes motor cortex and striatal regions, and that the vocal motor cortex sends a direct sparse projection to the brainstem vocal motor nucleus ambiguous, a projection previously thought be unique to humans among mammals. Recent behavioral studies have reported opposing conclusions on mouse vocal plasticity, including vocal ontogeny changes in USVs over early development that might not be explained by innate maturation processes, evidence for and against a role for auditory feedback in developing and maintaining normal mouse USVs, and evidence for and against limited vocal imitation of song pitch. To reconcile these findings, we suggest that the trait of vocal learning may not be dichotomous but encompass a broad spectrum of behavioral and neural traits we call the continuum hypothesis, and that mice possess some of the traits associated with a capacity for limited vocal learning.     

Hostile,volatile, avoiding,and validating couple‐conflict types: An investigation of Gottman's couple‐conflict types

Using two very different sets of survey data, we investigated Gottman's (1994a , 1999 ) observational findings regarding couple‐conflict types. We hypothesized that defensible couple‐conflict types could be established using survey data based on an individual's perception of the style he or she uses in couple‐conflict situations. Furthermore, we hypothesized that membership type would be related to relationship quality indicators such as satisfaction, stability, communication processes, and affect regulation. Our results showed that survey data can reliably produce couple‐conflict types similar to Gottman’s. We further found that, on satisfaction, stability, positive communication, and soothing, hostile couple‐conflict types had the lowest mean scores and validating couple‐conflict types the highest mean scores. The types related in the opposite manner to negative communication, the Four Horsemen of the Apocalypse, and flooding. The other couple‐conflict‐type means ‐ volatile and avoiding ‐ are almost always between the extreme means of the hostile and validating couple‐conflict types. Implications for research and practice conclude the article.     

Olfactory Comfort: Smelling a Partner's Clothing During Periods of Separation1

We demonstrate for the first time that most women, and some men, deliberately smell their partners' clothing when they are apart. We asked undergraduate men and women who were, or who had ever been, in a committed heterosexual relationship if they had ever slept with an article of a partner's clothing or deliberately smelled a partner's clothing during periods of separation. Both men and women reported that smelling an absent partner's clothing made them feel happy, comfortable, and secure. We suggest that olfactory comfort is a significant component of attachment and is likely to involve family members other than partners.