Hemispheric lateralization in aging: Interest of the verbal-manual concurrency paradigm

ABSTRACT

Introduction: The aim of this study was to evaluate whether the classic asymmetry seen in hemispheric functioning is modified in older adults by using a verbal-manual concurrency task. Method: Thirty-five right-handed participants divided into two groups according to age (15 older participants, mean age: 68 ± 8 years, without cognitive decline and 20 younger participants, mean age: 23 ± 2 years) had to perform a 30-second uni-manual tapping task, in both a single task (tapping alone) and dual task (tapping and performing a letter fluency task together) condition. Results: In younger participants, the letter fluency task disrupted the right hand more than the left hand whereas, in older participants, the letter fluency task disrupted both hands equally. Conclusion: These results should be considered preliminary data using a behavioral dual task condition, which might be useful for studying lateralized hemispheric functioning and the processes of divided attention during aging.     

The Effects of Age,Sex and Alzheimer's Disease on Strategy Use During Verbal Fluency Tasks

ABSTRACT

Clustering and switching strategies during phonemic and semantic verbal fluency tasks were investigated in healthy adults (n = 193, 86 males, 20–90 years) in young, middle-aged, young–old, and old–old age groups (Study 1). Older groups produced fewer total words and lower switching scores; males relied more on clustering and females on switching to produce equivalent output. In Study 2, early Alzheimer's disease participants, compared to healthy older adults, (n = 26 per group) produced fewer total words and smaller average clusters. Sex, age, and clinical differences on switching and clustering strategies support a dual processing model of verbal fluency.     

Ease-of-learning judgments are based on both processing fluency and beliefs

Processing fluency influences many types of judgments. Some metacognitive research suggests that the influence of processing fluency may be mediated by participants’ beliefs. The current study explores the influence of processing fluency and beliefs on ease-of-learning (EOL) judgments. In two experiments (Exp 1: n?=?94; Exp 2: n?=?146), participants made EOL judgments on 24 six-letter concrete nouns, presented in either a constant condition (high fluency) with upper-case letters (e.g., BUCKET) or an alternating condition (low fluency) with mixed upper- and lower-case letters (e.g., bUcKeT). After judging words individually, participants studied the words and completed a free recall test. Finally, participants indicated what condition they believed made the words more likely to be learned. Results show constant-condition words were judged as more likely to be learned than alternating condition words, but the difference varied with beliefs. Specifically, the difference was biggest when participants believed the constant condition made words more likely to be learned, followed by believing there was no difference, and then believing the alternating condition made words more likely to be learned. Thus, we showed that processing fluency has a direct effect on EOL judgments, but the effect is moderated by beliefs.     

The role of temporal speech cues in facilitating the fluency of adults who stutter

PurposeAdults who stutter speak more fluently during choral speech contexts than they do during solo speech contexts. The underlying mechanisms for this effect remain unclear, however. In this study, we examined the extent to which the choral speech effect depended on presentation of intact temporal speech cues. We also examined whether speakers who stutter followed choral signals more closely than typical speakers did.Method8 adults who stuttered and 8 adults who did not stutter read 60 sentences aloud during a solo speaking condition and three choral speaking conditions (240 total sentences), two of which featured either temporally altered or indeterminate word duration patterns. Effects of these manipulations on speech fluency, rate, and temporal entrainment with the choral speech signal were assessed.ResultsAdults who stutter spoke more fluently in all choral speaking conditions than they did when speaking solo. They also spoke slower and exhibited closer temporal entrainment with the choral signal during the mid- to late-stages of sentence production than the adults who did not stutter. Both groups entrained more closely with unaltered choral signals than they did with altered choral signals.ConclusionsFindings suggest that adults who stutter make greater use of speech-related information in choral signals when talking than adults with typical fluency do. The presence of fluency facilitation during temporally altered choral speech and conversation babble, however, suggests that temporal/gestural cueing alone cannot account for fluency facilitation in speakers who stutter. Other potential fluency enhancing mechanisms are discussed.Educational Objectives: The reader will be able to (a) summarize competing views on stuttering as a speech timing disorder, (b) describe the extent to which adults who stutter depend on an accurate rendering of temporal information in order to benefit from choral speech, and (c) discuss possible explanations for fluency facilitation in the presence of inaccurate or indeterminate temporal cues.     

Personal Goals and Depression Among Vietnamese American and European American Young Adults: A Mediational Analysis

Abstract

The authors report preliminary findings supporting the utility of the self-concordance model (K. M. Sheldon & A. J. Elliot, 1999) as an alternative approach to studying depression among Vietnamese American (N = 121) and European American (N = 155) college students. The participants completed measures of personal goals, goal self-concordance, and depression. Compared with the European American participants, the Vietnamese American participants reported higher levels of depression and lower levels of goal self-concordance. According to mediational analyses, ethnicity no longer accounted for significant variance in depression after the authors statistically controlled for goal self-concordance.     

Increasing Levels of Semantic Verbal Fluency in Elderly English Adults

ABSTRACT

Analyses incorporating large independent population-based samples and identical measures are needed to investigate recent trends in cognitive function. Nationally representative independent cohorts of community living individuals in England aged 65 years or older from the MRC Cognitive Function and Ageing Study in 1991 (n = 9458) and the English Longitudinal Study of Ageing in 2002 (n = 5196) were compared. East Cambridgeshire participants aged 65–69 years in 1991 (n = 680) were also compared to an independent cohort examined in 1996 (n = 600). Semantic verbal fluency, as measured by the animal naming neuropsychological test, increased by 1.1 extra words a minute in England between 1991 and 2002 (95% CI 0.9, 1.3). A similar increase was also observed in East Cambridgeshire. Levels of semantic verbal fluency appear to have increased in the older English population, which may help to buffer the aging population from future increases in dementia.     

Perceiving Racism in Ambiguous Situations: Who Relies on Easy-to-Use Information?

Abstract

In situations that are ambiguous with regard to the presence of discrimination, how do people arrive at their conclusions that discrimination has (or has not) taken place? This question was examined from a motivated social cognition perspective via the interaction of two factors: the prototype effect—the notion that ambiguously discriminatory behavior is more likely to be perceived as discriminatory when the executor is prototypical and the need for cognitive closure—the tendency to jump hastily to and seize on an answer. Results provided replicating evidence of the prototype effect among European American participants but not among African American participants. Specifically, European Americans were likely to perceive ambiguously racist behavior enacted by a prototypical executor (i.e., a White person) as more discriminatory than the same behavior exhibited by a non-prototypical executor (i.e., a Black person). African American participants, on the other hand, showed no reliance on this simple cognitive heuristic. Furthermore, results showed that European Americans with a higher need for cognitive closure were more likely to rely on the easy-to-use information offered by prototypes. These findings are discussed from a motivated social cognition perspective.     

Creativity and achievement in design coursework

Abstract:

Findings from this investigation with 81 college students indicate that ideational fluency is a valid predictor of student achievement in an interior design course. Both original and popular ideational fluency as measured by the Multidimensional Stimulus Fluency Measure were related to the course grade, design criteria scores, and the final project grade. Very few studies have found such a clear relationship between performance on any measure of creativity and actual performance in a course. The results suggest that the MSFM is a valuable tool for use in conjunction with other criteria in admissions screening for an interior design program.     

Level of Education and Category Fluency Task among Spanish Speaking Elders: Number of Words,Clustering, and Switching Strategies

ABSTRACT

It has been well documented that education influences the individual's performance on category fluency tasks but it is still unclear how this effect may differ across the different types of category tasks (i.e., animals, fruits, vegetables and clothing). This study aims (1) to analyze the effect of the level of education on four different types of category fluency tasks among elder Hispanic Americans and (2) to provide normative information on a population with different education levels that was previously screened for neurological and psychiatric conditions. In addition this study examines the semantic strategies used by these individuals to complete the fluency tasks. The sample included 105 healthy Hispanic individuals (age 55–98; 29 males and 76 females) divided into three education groups (<6, 6–11 and >11 years of education). Results showed that after controlling for age and gender, education has a main effect and is a strong predictor of performance in verbal fluency for the categories animals and clothing with increasing educational attainment being associated with higher category fluency scores and with more switches between categories. These findings suggest that the category fruit is less influenced by level of education than the other three semantic categories and may be a more appropriate test across different educational groups. Results from this study provide a reference for clinicians assessing verbal fluency in Spanish speaking populations.     

Health enhancing physical activity as perceived in interviews based on the theory of planned behaviour

Abstract

The perception of behaviours from two categories of health enhancing physical activity (HEPA): outdoor aerobic exercise (OAE) and everyday commuting activity (ECA) was examined in a sample of middle-aged persons (N= 50). A focused semi-standardised interview was constructed on the bases of the components of the Theory of Planned Behaviour (TPB). The participants perceived OAE behaviours predominantly from the viewpoint of exercise and those of the ECA from that of the fluency of daily routines. They considered the OAE as sensible and associated it with positive health or fitness outcomes, but only those practising it also attributed positive psychological effects to OAE behaviours. A slightly better congruence with the TPB was found for the OAE behaviours than for those of the ECA. The difference is discussed in the light of the higher degree of decisional control with the OAE behaviours and the greater psychological heterogeneity of the ECA.     

Whole Body Coordination and Knee Movement Control During Five Rehabilitation Exercises

Knee rehabilitation exercises to improve motor control, target movement fluency, and displacement variability. Although knee movement in the frontal plane during exercise is routinely assessed in clinical practice, optimal knee control remains poorly understood. In this study, 29 healthy participants (height: 1.73 ± 0.11 m, mass: 73.5 ± 16.4 kg, age: 28.0 ± 6.9 years) performed 4 repetitions of 5 rehabilitation exercises while motion data were collected using the VICON PlugInGait full-body marker set. Fluency and displacement variability were calculated for multiple landmarks, including center of mass (CoM) and knee joint centers. Fluency was calculated as the inverse of the average number of times a landmark velocity in the frontal plane crossed zero. Variability was defined as the standard deviation of the frontal plane movement trajectories. CoM fluency and displacement variability were significantly different between tasks (p < .001). CoM displacement variability was consistently smallest compared to the constituent landmarks (p < .005). This was interpreted as a whole body strategy of compensatory variability constraining CoM frontal plane movement. Ipsilateral knee fluency (p < .01) and displacement variability (p < .001) differed substantially between tasks. The role of the weight-bearing knee seemed dependent on task constraints of the overall movement and balance, as well as constraints specific for knee joint stability.     

Positive and negative affect,depression, and cognitive processes in the Cognition in the Study of Tamoxifen and Raloxifene (Co-STAR) Trial

ABSTRACT

Objectives: This study examined the relationship between positive and negative affect, depressive symptoms, and cognitive performance. Methods: The sample consisted of 1479 non-demented, postmenopausal women (mean age = 67 years) at increased risk of breast cancer enrolled in the National Surgical Adjuvant Breast and Bowel Project’s Study of Tamoxifen and Raloxifene. At each annual visit, women completed a standardized neuropsychological battery and self-report measures of affect and depression. Data from three visits were used in linear mixed models for repeated measures using likelihood ratio tests. Separate analyses were performed to relate positive/negative affect and depression to each cognitive measure. Results: Higher positive affect was associated with better letter fluency (p = .006) and category fluency (p < .0001). Higher negative affect was associated with worse global cognitive function (p < .0001), verbal memory (CVLT List B; p = .002), and spatial ability (p < .0001). Depressive symptoms were negatively associated with verbal knowledge (p = .004), figural memory (p < .0001), and verbal memory (p’s ≤ .0001). Discussion: Findings are consistent with some prior research demonstrating a link between positive affect and increased verbal fluency and between depressive symptoms and decreased memory. The most novel finding shows that negative affect is related to decreased global cognition and visuospatial ability. Overall, this research in a large, longitudinal sample supports the notion that positive affect is related to increases and negative affect to decreases in performance on distinct cognitive measures.     

Reciprocal within-day associations between incidental affect and exercise: An EMA study

Previous research suggests that how people feel throughout the course of a day (i.e. incidental affect) is predictive of exercise behaviour. A mostly separate literature suggests that exercise can lead to more positive incidental affect.

Objective: This study examines the potential reciprocal effects of incidental affect and exercise behaviour within the same day.

Design: Fifty-nine low-active (exercise <60 min/week), overweight (BMI: 25.0–39.9) adults (ages 18–65) participated in a six-month print-based exercise promotion programme.

Main outcome measures: Ecological momentary assessment was used to record self-reported exercise sessions in real time and incidental affective valence (feeling good/bad) as assessed by the 11-point Feeling Scale at random times throughout the day.

Results: Use of a within-subjects cross-lagged, autoregressive model showed that participants were more likely to exercise on days when they experienced more positive incidental affect earlier in the day (b = .58, SE = .10, p < .01), and participants were more likely to experience more positive incidental affect on days when they had exercised (b = .26, SE = .03, p < .01), with the former association significantly stronger than the latter (t = 23.54, p < .01).

Conclusion: The findings suggest a positive feedback loop whereby feeling good and exercising are reciprocally influential within the course of a day.     

Non-binary and binary transgender youth: Comparison of mental health,self-harm,suicidality, substance use and victimization experiences

ABSTRACT

?Background: Little research has compared the mental health and victimization experiences of non-binary youth depending on their sex assigned at birth (SAAB), or compared these two groups with binary transgender youth.

Aims: To compare mental health, self-harm and suicidality, substance use and victimization experiences between non-binary and binary transgender young adults, both male assigned at birth (MAAB) and female assigned at birth (FAAB).

Methods: Online survey data from 677 participants from the “Youth Chances” community study of 16 to 25 year olds in the United Kingdom was analyzed, comparing across binary participants (transgender females (n = 105) and transgender males (n = 210)) and non-binary participants (MAAB (n = 93) and FAAB (n = 269)).

Results: Female SAAB participants (binary and non-binary) were more likely to report a current mental health condition and history of self-harm than male SAAB participants (binary and non-binary). Similarly, female SAAB participants (binary and non-binary) were more likely to report childhood sexual abuse than male SAAB participants (binary and non-binary); the reverse pattern was found for lifetime physical assault relating to being LGBTQ. Non-binary MAAB participants were less likely than the other groups to report past suicide attempts and previous help-seeking for depression/anxiety. Binary participants reported lower life satisfaction than non-binary participants. For all four groups, mental health problems, self-harm, suicidality, alcohol use and victimization experiences were generally higher than that of youth in general population studies.

Conclusions: These findings highlight the importance of considering both non-binary versus binary gender identity and SAAB in relation to mental health problems, self-harm, suicidality and substance use in transgender youth. The roles of sexual abuse, other abuse and discrimination in contributing to increased rates of mental illness and self-harm in non-binary and binary transgender individuals, particularly those who were assigned female at birth, relative to those assigned male, require investigation.     

Divergent thinking: Strategies and executive involvement in generating novel uses for familiar objects

Although the Alternative Uses divergent thinking task has been widely used in psychometric and experimental studies of creativity, the cognitive processes underlying this task have not been examined in detail before the two studies are reported here. In Experiment 1, a verbal protocol analysis study of the Alternative Uses task was carried out with a Think aloud group (N = 40) and a Silent control group (N = 64). The groups did not differ in fluency or novelty of idea production indicating no verbal overshadowing. Analysis of protocols from the Think aloud group suggested that initial responses were based on a strategy of Retrieval from long‐term memory of pre‐known uses. Later responses tended to be based on a small number of other strategies: property‐use generation, imagined Disassembly of the target object into components and scanning of Broad Use categories for possible uses of the target item. Novelty of uses was particularly associated with the Disassembly strategy. Experiment 2 (N = 103) addressed the role of executive processes in generating new and previously known uses by examining individual differences in category fluency, letter fluency and divergent task performance. After completing the task, participants were asked to indicate which of their responses were new for them. It was predicted and found in regression analyses that letter fluency (an executively loading task) was related to production of ‘new’ uses and category fluency was related to production of ‘old’ uses but not vice versa.     

Effects of different attention tasks on concurrent speech in adults who stutter and fluent controls

Purpose: Motor theories indicate that focusing attention on well-practiced movements interferes with skilled performance; however, specific forms of attention (alerting vs. orienting vs. executive control) associated with this effect are not well understood. The present study explored this question in relation to stuttering, and examined whether dual task conditions that engaged sustained attention or working memory (WM) affected speech fluency in different ways. We also considered whether fluency changes were associated with changes in speech rate and language.Methods: Nineteen adults who stutter (AWS) and 20 controls produced spontaneous speech under a baseline condition and two dual task conditions: one involving a sustained attention task, the other involving WM demands.Results: Both groups produced fewer stutter-like disfluencies under dual task relative to baseline conditions and this reduction did not differ between the two dual tasks (attention vs. WM). Speech rate and language variables, which were potentially influenced by attention conditions, were not affected by dual tasks in the same way as disfluencies, and appeared to be unassociated with fluency results.Conclusions: Findings indicate that atypical disfluencies decrease when attention is divided, even when secondary task demands are minimal, as they were in the sustained attention task. For simple secondary tasks, fluency changes do not appear to be a byproduct of slowed rate and are not accompanied by observable changes in language. These results demonstrate that simple manipulations of attention can induce measurable effects on aspects of speech production, and may be a useful tool for facilitating fluency in clinical intervention.     

Changing Polish university students’ attitudes toward cluttering

PurposeThis quasi-experimental design study in Poland explored the extent to which attitudes toward cluttering of university students could be changed or improved after a series of activities dedicated to attaining deeper recognition of problems associated with fluency disorders.MethodUniversity students were assigned to either an Experimental or a Control group, with 39 in each (total = 78). They all completed the Polish version of the Public Opinion Survey of Human Attributes–Cluttering (POSHA–Cl) on two occasions up to eight weeks apart.Participants in the Experimental group attended the following intervention activities: watching and discussing an educational video on cluttering, participating in a workshop on the nature of cluttering, and watching and discussing a documentary on the life experiences of people struggling with fluency disorders. The Experimental group also filled out an open-ended questionnaire at the end of the study.ResultsPre-intervention comparisons indicated that participants assigned to either of the Experimental or Control groups differed significantly on 2 of the 15 summary ratings (13 %) of their pre-POSHA–Cl attitudes toward cluttering. For the Experimental group, the intervention resulted in significant positive changes in cluttering attitudes on 8 of the 15 summary ratings (53 %). In contrast, pre- and post- POSHA–Cl scores for the Control group were essentially unchanged (0 of 15 ratings).ConclusionsThis quasi-experimental study demonstrated that it is possible to positively modify the cluttering attitudes of university students. This has implications for the length, content, and experiential components of interventions designed to improve public attitudes toward fluency disorders.     

A qualitative analysis of the role of emotions in different patterns of long-term weight loss

Objective: To explore participant perspectives of the impact emotions have on weight loss.

Design: A qualitative design gathered data through semi-structured interviews with participants in a weight management programme. The interview addresses the following research questions: (1) how do individuals working to lose weight perceive the impact emotions have on their long-term success, and (2) what strategies do more or less successful participants use to regulate their emotions? Researchers conducted and transcribed the interviews then completed content analysis to create and organise themes.

Results: Two broad themes emerged through the interviews with 21 participants: emotional impact and emotional regulation. Further subthemes captured emotions blocking action toward goals, strategies for regulating emotions (e.g. exercise, food) and the need for new strategies to regulate emotions. Themes were also split in to three groups based on weight outcomes: regainer, moderate success (3–6% loss) and large success (>7% loss). More successful participants, compared to regainers, shared being aware of the impact of their emotions and made efforts to develop healthy regulation strategies.

Conclusions: Emotional awareness and regulation play an important role in participant’s weight management experience. Taking time to build emotional awareness and strategies to manage emotions is important to participants in weight management.     

Stuttering treatment for a school-age child with Down syndrome: A descriptive case report

BackgroundLittle is known about optimal treatment approaches and stuttering treatment outcomes for children with Down syndrome.Aims and methodThe purpose of this study was to investigate outcomes for a child with Down syndrome who received a combination of fluency shaping therapy and parent delivered contingencies for normally fluent speech, prolonged speech, and stuttered speech.ResultsIn-clinic speech measures obtained at post-treatment and at 4 months follow-up reflected improvements in fluency of 89.0% and 98.6%, respectively. The participant's beyond-clinic follow-up sample reflected an improvement of 95.5%. Following treatment, the participant demonstrated improved self-confidence, self-esteem, and improved participation and functioning at school.ConclusionsFindings suggest that fluency shaping with parental contingencies may be a viable treatment approach to reduce stuttering in children with Down syndrome. Future research using an experimental research design is warranted.Educational objectives: Readers will be able to describe (a) prevalence estimates of stuttering in individuals with Down syndrome, (b) the main components of a fluency shaping program for a child with Down syndrome who stutters and has co-occurring speech and language delays, and (c) speech and parent-, teacher-, and self-report treatment outcomes.     

Depressive symptoms and use of perspective taking within a communicative context

Objective: The ability to take the perspective of one's conversational partner is essential for successful communication. We assessed whether individuals who report high levels of depressive symptoms have more difficulty with navigating this interpersonal task. Method: Undergraduate students participated in a computerised communication task that, on some trials, required perspective taking (N=125). Results: When participants were grouped according to their self-reported depressive symptoms, the “dysphoric group” (BDI ≥ 16, n=37) showed more errors than a “non-dysphoric group” (BDI ≤ 10, n=56) on trials requiring participants to use the perspective of the speaker, but not on control trials where perspective taking was not required. The dysphoric group demonstrated slower response times overall. Conclusions: Individuals with moderate to high levels of depressive symptoms are more challenged by using a speaker's perspective to interpret statements.