Constructing Profiles of Religious Agreement and Disagreement Between Adolescents and Mothers: A Research Note

This research note describes the use of latent class analysis to examine how three dimensions of religiosity—the importance of religion (religious salience), attendance at religious services, and frequency of prayer—cluster together to form unique profiles. Building upon recent research identifying different profiles of religiosity at the level of the individual, we used data from the National Longitudinal Study of Adolescent Health to identify dyadic profiles of religious concordance or discordance between 14,202 adolescents and their mothers. We identified five profiles: one concordant (27% of sample), two discordant (25% of sample), and two of mixed concordance/discordance (49%). The profiles distinguish between various levels of adolescent/mother relations, suggesting that they may represent distinct family dynamics. They also distinguish between several variables (race, adolescent age, geographical region) in predictable ways, providing additional demonstration of the categories’ meaningfulness.     

Speech Rate and Syntactic Complexity as Multiplicative Factors in Speech Comprehension by Young and Older Adults

An experiment is reported in which young and older adults heard short English sentences that differed in syntactic complexity and speech rate. The syntactic contrast pitted center-embedded sentences with a subject-relative clause against sentences with center-embedded object-relative clauses. Speech rate was varied using computer time-compression of the speech signal. Both young and older adults showed poorer comprehension accuracy for the more complex object-relative clause sentences than subject-relative sentences, with an age difference appearing only when sentences were presented at a very rapid rate. By contrast to accuracy scores, older adults took longer than the young adults to give their comprehension responses at all speech rates tested, with this age difference amplified by both speech rate and syntactic complexity.     

The organization of narrative discourse in Lewy body spectrum disorder

Narrative discourse is an essential component of day-to-day communication, but little is known about narrative in Lewy body spectrum disorder (LBSD), including Parkinson’s disease (PD), Parkinson’s disease with dementia (PDD), and dementia with Lewy bodies (DLB). We performed a detailed analysis of a semi-structured speech sample in 32 non-aphasic patients with LBSD, and we related their narrative impairments to gray matter (GM) atrophy using voxel-based morphometry. We found that patients with PDD and DLB have significant difficulty organizing their narrative speech. This was correlated with deficits on measures of executive functioning and speech fluency. Regression analyses associated this deficit with reduced cortical volume in inferior frontal and anterior cingulate regions. These findings are consistent with a model of narrative discourse that includes executive as well as language components and with an impairment of the organizational component of narrative discourse in patients with PDD and DLB.     

Age-related declines in general cognitive abilities of Balb/C mice are associated with disparities in working memory, body weight, and general activity

A defining characteristic of age-related cognitive decline is a deficit in general cognitive performance. Here we use a testing and analysis regimen that allows us to characterize the general learning abilities of young (3-5 mo old) and aged (19-21 mo old) male and female Balb/C mice. Animals' performance was assessed on a battery of seven diverse learning tasks. Aged animals exhibited deficits in five of the seven tasks and ranked significantly lower than their young counterparts in general learning abilities (aggregate performance across the battery of tasks). Aging added variability to common core performance (i.e., general learning ability), which translated into increased variability on the individual cognitive tasks. Relatedly, general learning abilities did not differ between the two ages among the best quartile of learners (i.e., cognitive abilities were spared in a subsample of the aged animals). Additionally, working memory capacity (resistance to interference) and duration (resistance to decay) accounted for significantly more of the variability in general learning abilities in aged relative to young animals. Tests of 15 noncognitive performance variables indicated that an increase in body weight (and an associated decrease in general activity) was characteristic of those aged animals which exhibited deficient general learning abilities. These results suggest the possibility that general cognitive deficits in aged animals reflect a failure of specific components of the working memory system, and may be related to variations in body weight and an associated decrease in activity.     

Rates and Correlates of DSM-IV Diagnoses in Women Newly Diagnosed with Breast Cancer

Although the presence of psychological distress has been documented in women with breast cancer, previous studies have not established rates of DSM-IV diagnoses in this population, nor have prior investigations compared the utility of diagnostic interviewing vs. symptom checklists to assess distress. DSM-IV diagnoses of anxiety disorders and major depression, symptoms of anxiety and depression, and quality of life were examined in 207 women with newly diagnosed breast cancer. Eighteen percent of breast cancer patients met criteria for a current DSM-IV anxiety or depressive disorder and 54% met criteria for a disorder at some point in their lifetime. These rates are comparable to those found in recent community epidemiological studies (e.g., R. C. Kessler, K. A. McGonagle, S. Zhao, C. B. Nelson, M. Hughes, S. Esheman, et al., 1994). Sensitivity, specificity, and positive predictive value for anxiety and depression symptoms as predictors of DSM disorders were relatively poor. However, after accounting for demographic, treatment, and cancer variables, self-reported anxiety symptoms were significantly related to the presence of an anxiety disorder and self-reported depressive symptoms were significantly related to a diagnosis of a depressive disorder. Symptoms of anxiety and depression contributed significantly and uniquely to physical, medical, and sexual quality of life; DSM-IV diagnoses were not significantly related to quality of life after controlling for symptoms of depression and anxiety. The importance of measuring both symptoms of distress and psychiatric diagnoses in cancer patients and the clinical practice implications of the results are discussed.     

Lexical Acquisition in Probable Alzheimer''s Disease

Patients with probable Alzheimer's disease (pAD) were exposed to a new verb in a naturalistic fashion. We probed their knowledge of the word's semantic and grammatical characteristics for several minutes following this exposure, and compared this with their performance on parallel measures assessing known words. Significant differences were seen between pAD patients and controls in the acquisition of the new verb's semantic meaning and its argument structure, but pAD patients did not differ from controls in the acquisition of the new word's grammatical form class. Individual patient analyses demonstrated parallel deficits restricted to the semantic meaning and argument structure of the new word and known words in several pAD patients, suggesting that a selective language impairment contributed to their word learning deficit. This pattern is consistent with an intimate relationship between semantic meaning and argument structure in semantic memory. Other pAD patients had difficulty learning about all aspects of the new word, despite good performance with known words, suggesting that compromised memory may have limited their lexical acquisition.     

MUSICAL REINFORCEMENT OF PRACTICE BEHAVIORS AMONG COMPETITIVE SWIMMERS

This study determined whether music could be used as a reinforcer for increasing productive and decreasing nonproductive behavior of 6 competitive swimmers during the dry-land portion of a practice session. The swimmers were randomly assigned to either the contingent reinforcement group, who received music for productive behavior, or the noncontingent group, who received music regardless of their training productivity. An ABAB design showed that a large and immediate increase in productive practice behavior and decrease in nonproductive practice behavior occurred during the contingent phase compared to the baseline phase. Subjects rated the musical reinforcement favorably and elected to have the procedure continued.