Clinical Effectiveness of the LE<Superscript>3</Superscript>AN Program: A Military Healthy Lifestyle Program

For several decades, obesity has been a major health concern within the general population of the United States as well as within the unique military population. Unlike the civilian sector, military service requires individuals to meet weight and body fat standards. In order to assist overweight military personnel return to standards, Tripler Army Medical Center initiated the LE³AN Program. LE³AN is a one-week, day-treatment, cognitive-behavioral weight management program coupled with 12 months of weekly follow-up. Baseline data was collected on 387 consecutive participants. Despite physical fitness training and required standards in each military service, the average BMIs for men and women were in the obese range, with male participants’ BMIs significantly higher than women’s (34.3 vs 31.9, p<.005). One year outcome data was collected from 167 participants, i.e. 43.2% of treatment initiators. Among participants who completed treatment, men maintained a 6.56% loss of their initial weight while women maintained a 7.35% loss. Over a quarter, 26.6%, of those who started the program (but did not complete it) maintained at least a 5% weight loss at one year, while 61.6% of treatment completers maintained 5% weight losses. The opinions expressed in this article reflect the views of the authors and not those of the Department of Defense or the U.S. Army.     

Life-long environmental enrichment differentially affects the mnemonic response to estrogen in young, middle-aged, and aged female mice

The present study was designed to examine whether life-long exposure to standard or enriched housing affects the ability of estrogen to improve spatial and object memory throughout the lifespan. Three-week-old female mice were maintained in standard or enriched housing up to and through ovariectomy and behavioral testing at 5, 17, or 22 months of age. Spatial memory was tested in the Morris water maze and object memory was tested using an object recognition task. Immediately after training each day, mice were injected intraperitoneally with vehicle or 0.2 mg/kg 17beta-estradiol. Among young females, object recognition was enhanced by estradiol alone, an effect that was reduced by enrichment. In contrast, spatial water maze performance was impaired by estradiol alone, but improved by the combination of both estradiol and enrichment. At middle-age, object recognition was enhanced by estradiol or enrichment alone, and the combination of both treatments. Spatial memory in the water maze was also improved by both treatments at middle-age, but the beneficial effects of estradiol were limited to standard-housed females. Finally, whereas enrichment in aged females significantly enhanced performance in both tasks, estradiol had no effect at this age in either task. In total, the data indicate that life-long enrichment can significantly alter the extent to which estradiol affects memory in mice throughout the lifespan. Importantly, the interaction between these treatments is highly dependent on age and type of memory tested.     

Sequelae of Aggression in Acutely Suicidal Adolescents

The consequences of aggression on problem course and suicide risk were examined in 270 acutely suicidal adolescents (ages 12-17 years; 184 girls). Participants were assessed during psychiatric hospitalization (T1), 6-months post-hospitalization (T2), and 15 or more months post-hospitalization (T3). Study variables included self- and parent-reported aggression; self-reported internalizing symptoms, suicidal ideation, suicide attempt, and adverse events; and clinician-rated suicidal behavior. Aggression was not directly related to suicide attempt concurrently or prospectively. However, among more aggressive youth, internalizing symptoms were more predictive of T3 suicide attempt than among less aggressive youth. T1 aggression predicted aggressive incidents and the likelihood of incarceration prior to T3. Two-level hierarchical linear modeling indicated that self-reported aggression and internalizing problems were linked in terms of severity and rates of decline over time. Overall, parent-reported aggression was negatively associated with suicidal ideation. Findings highlight (a) the continuity and consequences of aggression, (b) a possible role of aggression in worsening suicide risk factors and potentiating suicide attempt, and (c) the importance of ongoing research on subtypes of suicidal adolescents.     

DEVELOPMENT AND EVALUATION OF AN INFANT-CARE TRAINING PROGRAM WITH FIRST-TIME FATHERS

We evaluated the effectiveness of a multicomponent package in training infant-care skills to first-time fathers. After developing and socially validating a set of infant-care skills, we assessed the effects of training in a hospital-based program with expectant fathers (Experiment 1) and in a home-based program with fathers having varied degrees of experience with their infants (Experiment 2). In both experiments, a multiple probe design demonstrated that the training package was responsible for producing criterion performance by the expectant and first-time fathers. A 1-month generalization probe in Experiment 1 showed that the effects transferred across training conditions (training doll to human infant) and settings (hospital to home). An increase in the number of infant-stimulation activities performed by fathers was also observed in both experiments.     

Amplitude Scaling Compensates for Serial Delays in Correcting Eye and Arm Movements

Spatial and metrical parameters of the eye and arm movements made by human subjects (N = 7) in response to visual targets that were stepped unexpectedly either once (single step) or twice (double step) were studied. For the double-step, the displacement of a visual target was decreased or increased in amplitude at intervals before and during a movement. Provided the second target step occurred more than 100 ms before the onset of movement, the amplitude of the subjects' first response was altered in the direction of the new target location. But this amplitude scaling was not always sufficient to reach the new target location, and a second corrective response was required. The latency in producing this second response was greatly increased above reaction time latencies of movements to single-step targets, especially when the target change occurred 100 ms or more before movement onset. These findings suggest that even though serial processing limitations delay the production of a second corrective response, continuous parallel processing of visual information enables the amplitude of the first response to be altered with minimal delay. This enables some degree of real-time continuous control by the visuomotor control system.     

Sports participation at work: An aid to stress management?

This study examined the effects of sport participation on mood, including stress, arousal, and psychological reversals. The subjects (N = 42) of the study were enrolled in an international MBA program which included, in addition to a range of academic courses, a course in physical education for which attendance was voluntary. Subjects, 26 sport participants and 16 nonparticipants, completed mood measures on five occasions throughout a typical working day, including just before and just after a sport session. Significant differences on some mood measure items and a number of pre- to post-sport significant effects (seriousmindedness and stress) were found between the sport and non-sport group, as well as reversals in psychological state. These results suggest that sport may well act as a modulator of mood and/or an inducing agent for reversal and therefore may play an important role in stress management intervention programs at work.     

Naturalistic assessment of children's compliance to teachers' requests and consequences for compliance

Naturally occurring levels of teacher commands, child compliance to those commands, and positive and negative teacher feedback were studied in 19 teachers and 130 children in kindergarten through third grade. Seventy-five of the children had been identified as "making a good social adjustment" to school (high-rated) and 55 children were identified as "not making a good social adjustment" to school (low-rated). Results of intensive observation over a 4-wk period showed that: (a) individual teachers differed significantly in their overall use of commands; however, they did not differentially respond to high- versus low-rated children; (b) high-rated children were more likely to comply with commands than were low-rated children; (c) although the overall level of positive social consequences was extremely low, there was some indication that high-rated children were more likely to receive positive feedback for compliance than were low-rated children; (d) low-rated children received significantly more positive feedback than high-rated children for noncompliance; (e) teachers gave negative feedback for noncompliance at an equal level to both groups of children; and (f) although repeated teacher commands following noncompliance were equal across groups, low-rated children were exposed to significantly higher levels of repeated commands following compliance than were high-rated youngsters.     

Individual differences in cognitive strategy and personality traits as measured by the Sixteen Personality Factor Questionnaire

The relationship between personality and preference for use of the right or left hemisphere of the brain in cognitive processing was investigated. Lateral eye movements were recorded as 50 female and 20 male right-handed subjects considered questions requiring reflection. The questions were not obviously "verbal" or "spatial" in nature but did require differing levels of reflection. Questions requiring higher levels of reflection produced a higher rate of lateral eye movement responses. Percent right eye movement for individual subjects was then correlated with scores on the Sixteen Personality Factor Questionnaire, using both first-order factors and the second-order factor Cortertia, which has some face validity as describing the personality generally ascribed to those who produce mostly right lateral eye movements. No correlation was found between the preferred directions of eye movements and 16 PF factors, which suggests that the lateral eye movements reflect thinking and problem-solving strategies but are not associated with personality styles.