The effects of lemon taste on attention,perceived exertion,and affect during a stepping task

ObjectivesTo better understand the effects of taste cues on delaying the attention shift from an external focus (dissociative) towards an internal focus (associative) as exercise intensity increases.DesignA between subjects' experimental design with random assignment to three groups: taste (lemon-flavored mouth guards), placebo (unflavored mouth guards), or control group (no mouth guards) was used. Participants reported perceived exertion, affect (i.e., pleasantness and arousal), and attention allocation before, during, and after performing a weighted stepping task.ResultsPerforming the task resulted in a gradual increase of perceived exertion, F (1.87, 74.89) = 63.05, p < .05, η_p² = .61, along with a shift from dissociative to associative attention, F (2.17, 86.68) = 35.57, p < .05, η_p² = .47 across all conditions. Additionally, participants reported feeling less pleasant and more aroused after task completion in all conditions. The lemon-flavored mouth guard failed to affect attention, F (4.33, 86.68) = 1.41, p = .23, η_p² = .07, perceived exertion, F (3.74, 74.86) = .38, p = .81, η_p² = .02, pleasantness, F (2, 40) = .126, p = .88, η_p² = .01, and arousal, F (2, 40) = 2.40, p = .10, η_p² = .10, differently than the other two conditions.ConclusionsThe study was one of the first to examine the effects of taste during an exertive task. Despite the non-significant effects of using a lemon-taste mouth guard on various cognitive variables (perception of exertion, attention allocation, pleasantness, and arousal), more scientific effort is needed to explore the effects of other tastes (e.g., sweet, bitter) and delivery methods (e.g., sprays, drops).     

False memory,attentional bias and future thinking among people living with HIV with posttraumatic stress disorder

People living with HIV can experience posttraumatic stress disorder (PTSD). Complex relationships exist between HIV, PTSD and cognitive impairments. This cross-sectional study compared three cognitive impairments (false memory, attentional bias, deficits in future thinking) among people living with HIV with and without PTSD in Iran. People living with HIV with PTSD (n = 20) and without PTSD (n = 20) completed measures of psychological symptomatology, dot-probe task, Deese Roediger McDermott paradigm and future thinking task at Razavi Khorasan Health Center. The PTSD group, when compared to the non-PTSD group, recognised a significantly greater number of false memories (p < .001; η² = .58), had an attentional bias toward threat-related words (p < .001; η² = .35) and imagined fewer specific future events (p < .001; η² = .31). People living with HIV with PTSD may have difficulties with false memory, attentional biases, and generating future events. Since psychological treatments are limited in Iran, this research highlighted some potential cognitive targets for people living with HIV.     

Active or Inert? An Experimental Comparison of Creative Ideation across Incubation Periods

The primary objective of this study was to contribute to the growing research discipline investigating the effects of physical exercise on divergent thinking creativity performance. Thirty‐two students participated in this two‐visit, within‐subject intervention. Individuals consented to participate in two randomized, and counterbalanced, experimental conditions, consisting of 15 min of active treadmill walking and an inert, seated control incubation period. Creativity was assessed at baseline and post‐exercise (and control) via the Instances Creativity Task (ICT). Creativity scores for changes in fluency (F(1, 31) = 2.90, p = .10) were not statistically significant across the experimental conditions. Originality scores were higher at baseline and follow‐up when compared to the exercise condition (F(1, 31) = 6.82, p = .01). However, there was no statistically significant condition × time interaction effect (F(1, 31) = 1.78, p = .19). Further analyses demonstrated that there was no statistically significant difference between the experimental conditions on recall score (F(1, 31) = 1.04, p = .32). All models indicated statistically significant main effects for time: fluency (F(1, 31) = 131.17, p < .001); originality (F(1, 31) = 36.54, p < .001); and recall (F(1, 31) = 51.75, p < .001). These findings suggest that both active and inert creative incubation periods may similarly enhance subsequent divergent thinking performance.     

Effect of psychostimulant medications on static balance performance in adults with attention deficit hyperactivity disorder: Within-subjects repeated-measure study

ObjectiveThis study examined the effect of psychostimulant medications nPS) on balance and functional motor performance in adults with attention-deficit/hyperactivity disorder (ADHD).MethodsParticipants completed two sessions (off-medication and on-medication) in a within-subjects repeated-measure study design. There was a minimum of seven days between the two sessions. During both sessions, participants stood for 30 s per condition on a force platform. The conditions were: feet-apart with 1) eyes-open and 2) eyes-closed; feet-together with 3) eyes-open and 4) eyes-closed. Participants performed three trials of timed up and go (TUG) and lateral step-up test (LSUT) during both sessions. Outcome measures were sway area (SA [cm²]), average sway velocity (SV [cm/s]), TUG average time (s), and average number of LSUT repetitions. Data were analyzed using multivariate repeated measures analysis of variance and paired t-tests for examining PS effects on balance (SA and SV) and functional motor performance (TUG and LSUT), respectively.ResultsThe sample included 45 adults (35 females; mean age = 28.4 ± 6.3 years). The repeated-measures MANOVA indicated that PS was associated with better SA [F(1,44) = 9.6; p = 0.003;η_p² = 0.18] but not with SV [F(1,44) = 1.0; p = 0.319;η_p² = 0.02]. PS was associated with significantly better SA with decreasing base-of-support [F(1,44) = 9.9; p = 0.003;η_p² = 0.18]. Additionally, PS use was associated with better TUG [t(1,44) = 2.65; p = 0.014;Cohen's d = 0.39] but not LSUT performances [t(1,44) = −0.68; p = 0.499;Cohen's d = −0.10].ConclusionsPS was associated with better SA and TUG in adults with ADHD. Further studies are needed to investigate the effects of PS on balance performance using rigorous designs in this population.ImpactHealthcare providers should screen for PS status and balance when treating adults with ADHD to enhance safe motor performance.     

How impaired is too impaired? Exploring futile neuropsychological test patterns as a function of dementia severity and cognitive screening scores

Some older adults cannot meaningfully participate in the testing portion of a neuropsychological evaluation due to significant cognitive impairments. There are limited empirical data on this topic. Thus, the current study sought to provide an operational definition for a futile testing profile and examine cognitive severity status and cognitive screening scores as predictors of testing futility at both baseline and first follow-up evaluations. We analysed data from 9,263 older adults from the National Alzheimer’s Coordinating Center Uniform Data Set. Futile testing profiles occurred rarely at baseline (7.40%). There was a strong relationship between cognitive severity status and the prevalence of futile testing profiles, χ²(4) = 3559.77, p < .001. Over 90% of individuals with severe dementia were unable to participate meaningfully in testing. Severity range on the Montreal Cognitive Assessment (MoCA) also demonstrated a strong relationship with testing futility, χ²(3) = 3962.35, p < .001. The rate of futile testing profiles was similar at follow-up (7.90%). There was a strong association between baseline dementia severity and likelihood of demonstrating a futile testing profile at follow-up, χ²(4) = 1513.40, p < .001. Over 90% of individuals with severe dementia, who were initially able to participate meaningfully testing, no longer could at follow-up. Similarly, there was a strong relationship between baseline MoCA score band and likelihood of demonstrating a futile testing profile at follow-up, χ²(3) = 1627.37, p < .001. Results can help to guide decisions about optimizing use of limited neuropsychological assessment resources.     

The influence of T-shirt graphics on perceptions and behavioral intentions

Do graphics on clothing drive perceptions? We used a between group design to test if athletic, academic, or suggestive graphics on clothing differentially influence perceptions and behavioral intentions. In study 1, participants (N = 199) rated five female t-shirt models, and in study 2 and 3, participants rated five male t-shirt models (N = 120) or university students (N = 50). Analyses of variance controlling for sex (ANCOVA) showed participants were least likely to want to interact with models/students wearing sexually suggestive graphics: Study 1, F(3,165) = 30.263, p < .001, η_p ²  = .30, power = 1.00; Study 2, F (3,119) = 11.630, p < .000, η_p ² = .234, and Study 3, F(1, 42) = 12.578, p < .000. Participants did not rate models in the academic and athletic graphic shirts differently from models with plain white shirts. Results support the concept that people form different perceptions based upon the clothing a person wears, changing behavioral intentions. Neither sex role ideation (Study 1) or sexism (Study 2) were significant covariates of perceptions and intentions.     

Coping,social support,stigma, and gender difference among people living with HIV in Guangxi,China

The current study examined whether gender, HIV-related stigma, social support, and the interaction between gender and social support are associated with coping responses among people living with HIV and AIDS (PLWHA) in Guangxi, China. A total of 2987 PLWHA in Guangxi participated from October 2012 to August 2013. Multivariate analysis of covariance was conducted with gender and social support as main factors in the model, and stigma and other variables as covariates. After controlling for demographic variables and stigma, there were significant main effects of emotional social support (F = 1.61, p < .001), functional social support (F = 1.67, p < .001), and informational social support (F = 3.67, p < .001) on various coping strategies. The interaction between gender and informational social support (F = 1.33, p < .05), internalized stigma (F = 37.03, p < .001) and perceived stigma (F = 9.16, p < .001) were associated with various coping strategies. Findings signify the importance of HIV-related stigma and social support differences in the coping strategies among PLWHA in Guangxi, China.     

Effects of mindfulness-based stress reduction on prenatal stress,anxiety and depression

Low well-being is common among Chinese pregnant women but few effective interventions currently exist to improve prenatal stress and negative emotions. Mindfulness-based stress reduction (MBSR) has been proved to be effective in reducing stress and rarely studies were focused on Chinese pregnant women. The aim of the current paper is to investigate the effects of 8-week MBSR on prenatal stress, anxiety and depression among Chinese pregnant women. A sample of 66 pregnant women randomly allocated into either the MBSR group (n=34) or the control group (n=32). Participants in the MBSR group received a group 8-week, 90-min each time intervention. The results found a significant interaction between time and condition for prenatal stress (F=45.51, p<0.001, η ²=0.427), anxiety (F=19.30, p<0.001, η ²=0.240), while depression showed no time-by-group interaction (F=0.29, p=0.589, η ²=0.005). As for the sub-scale of state anxiety, while there was only no time effect (F=3.68, p=0.060, η ²=0.057). The findings of this study preliminary indicated effects of the MBSR intervention on self-reported prenatal stress and anxiety in comparison to a treatment-as-usual control. Effect on depression was not observed may due to the low level of depression of participants. This study provides preliminary evidence that MBSR is suitable for Chinese pregnant women and be effective in decreasing prenatal stress, anxiety.     

Racial exclusion causes acute cortisol release among emerging-adult African Americans: The role of reduced perceived control

ABSTRACT

Racial discrimination contributes to stress-related health disparities among African Americans, but less is known about the acute effects of racial exclusion on the hypo-pituitary-adrenocortical response and psychological mediators. Participants were 276 Black/African American emerging-adults (54% female; M _age = 21.74, SD = 2.21) who were randomly assigned to be excluded or included by White peers via the game Cyberball. Racial exclusion (vs. inclusion) predicted: greater negative affect (F(1, 276) = 104.885, p < .0001), lower perceived control (F(1, 276) = 205.523, p < .0001), and greater cortisol release (F(1, 274) = 4.575, p = .033). Racial exclusion’s impact on cortisol release was mediated by lower perceived control (95% CI: .027, .112), but not negative affect (?.041, .013). These findings suggest that racial exclusion contributes to acute cortisol release, and that reduced perceived control is a consequence of racial discrimination that has important implications for the health of those who experience discrimination.     

A little shot of humility: Intellectual humility predicts vaccination attitudes and intention to vaccinate against COVID-19

Vaccinations remain a critical, albeit surprisingly controversial, health behavior, especially with the promise of widely available COVID-19 vaccine. Intellectual humility, a virtue characterized by nonjudgmental recognition of one's own intellectual fallibility, may counter rigidity associated with anti-vaccination attitudes and help promote vaccine-related behaviors. This study investigated whether intellectual humility is related to anti-vaccination attitudes and intentions to vaccinate against COVID-19, and whether intellectual humility can predict unique variance in these outcomes beyond participant demographic and personal factors. Participants (N = 351, 57.23% male, mean age = 37.41 years, SD = 11.51) completed a multidimensional measure for intellectual humility, the anti-vaccination attitudes (VAX) scale, and a two-item COVID-19 vaccination intention scale. Bivariate correlations demonstrated that intellectual humility was negatively related with anti-vaccination attitudes overall, r(349) = −.46, p < .001, and positively related to intentions to vaccinate against COVID-19, r(349) = .20, p < .001. Hierarchical multiple regression revealed that intellectual humility predicted all four types anti-vaccination attitudes, overall anti-vaccination attitudes, and COVID-19 vaccination intentions above and beyond demographic and personal factors (i.e., sex, race/ethnicity, age, education, socioeconomic status, and political orientation), ΔR² between .08 and .18, ps < .001. These results bolster intellectual humility as a malleable psychological factor to consider in efforts to combat anti-vaccination attitudes and promote COVID-19 vaccination uptake.     

Organ donation intentions and behaviors: application and extension of the theory of planned behavior

Organ donation intentions and behaviors were investigated using a traditional and extended theory of planned behavior (TPB). In study 1, attitudes, subjective norms, and perceived behavioral control were associated with intentions to engage in donation behaviors in a student sample (all p ≤ .02), and intentions significantly predicted behavior 2 months later (p < .001). Study 2 utilized a community sample of Catholic, Jewish, and Muslim individuals. Measures of affect and religious attitudes were added to the traditional TPB, increasing the variance in intentions accounted for by the model, F(7, 181) = 6.94, p < .001. The studies support the use of an extended TPB in predicting donation‐related intentions and behaviors and suggest potential targets of interventions to promote donation.     

Early Feeding,Child Behaviour and Parenting as Correlates of Problem Eating

Mealtimes are a common source of stress for families. Examining factors related to problem eating may provide markers by which to identify families requiring assistance and salient targets for treatment. The current study investigated parenting practices and cognitions, generalisation of child behavioural issues, and early feeding history as they relate to problem eating in typically developing young children. We compared a community sample of 105 parents of 1.5–6-year-old children via survey and observation with 96 parents seeking treatment for their child’s problem eating. History of problems with breastfeeding, χ²(1)?=?3.88, p?=?.049, and the transition to solids, χ²(1)?=?7.27, p?=?.007, were more common among problem eaters than comparisons. Problem eaters had a greater number of problem behaviours outside of mealtimes, F(1181)?=?10.88, p?=?.001, though not more frequently than comparisons and not to clinical levels, F(1181)?=?1.81, p?=?.181. Parents of problem eaters reported more unhelpful mealtime parenting strategies, F(1155)?=?22.59, p?<?.001, yet general parenting style was similar by group, F(1187)?=?0.42, p?=?.527. Parents’ cognitions about mealtimes, F(1155)?=?119.81, p?<?.001, including mealtime-specific self-efficacy, F(1155)?=?171.30, p?<?.001, were poorer amongst problem eaters, and were the only factors to predict problem eating in the total sample. General parenting self-efficacy was poorer in parents of problem eaters (Behaviour: F(1187)?=?42.36, p?<?.001; Setting: F(1187)?=?10.64, p?=?.001). Evidence of feeding issues in infancy may support early detection of and intervention for later problem eating. The significance of broader child behaviour is less clear. Parent factors, particularly those specific to mealtimes, and cognitive in nature (including mealtime parenting self-efficacy) clearly differentiated the groups, and represent important targets for intervention.     

Putting evidence‐based claims to the test: A multi‐site classroom study of retrieval practice and spaced practice

Retrieval practice and spacing out studying help increase learning. Introductory Psychology students at nine colleges/universities took quizzes with more (RP+) or less (RP?) retrieval practice and more (SP+) or less (SP?) spacing between quizzes. We compared (N = 351) scores on class exams and on a standardized test. We also measured key student variables (e.g., depth of processing). GPA predicted a significant portion of variance in exam scores, R² = 0.05, F(1, 204) = 10.84, p = 0.001. We found a main effect for retrieval practice and a significant retrieval by spacing practice interaction, R² = 0.28, F(3, 201) = 27.38, p < 0.001. Students using SP+, as well as those with SP? and RP?, scored higher than students using SP? and RP+. In practice, closer attention needs to be paid to quiz and exam content overlap and the duration within which repetition is used.     

Students' defending and passive bystanding behaviours when witnessing school bullying in North Western Ethiopia: Roles of personal and situational factors

Guided by Thornberg et al.'s (2012) framework on motivation to intervene, the present study examines whether personal and situational factors are associated with defending and passive bystanding behaviours in school bullying. Self-reported survey data were collected from 612 students (aged 12–16 years) attending grades 7, 8, 9, and 10 in East Gojjam Administrative Zone, North Western Ethiopia. Hierarchical regression analysis revealed that the strongest, significant predictors of defending were self-efficacy for defending (β = .215, p = .000), affective empathy (β = .173, p = .000), students' experience as victim (β = .119, p = .002), personal sense of power (β = .119, p = .006), followed by moral disengagement (β = .118, p = .002), and age level (β = −.082, p = .036). All variables jointly explained 18.6% of the total variance in defending, F (12, 599) = 11.397, p < .00; with medium effect size (f² = 0.23). In contrast, the strongest predictors of passive bystanding were moral disengagement (β = .233, p = .000), perceived costs and benefits of defending (β = −.163, p = .000), self-efficacy (β = −.139, p = .003), students' experience as victim (β = .097, p = .014), followed by gender (β = −.080, p = .042). The model explained 16.7% of the total variance in passive bystanding, F (12, 599) = 10.043, p < .001; with medium effect size (f² = 0.20). The findings enrich our understanding of factors associated with defending and passive bystanding behaviours. The implications for intervention are discussed. Please refer to the Supplementary Material section to find this article's Community and Social Impact Statement.     

Hostile/Helpless maternal representations in pregnancy and later child removal: A pilot study

This article presents the results of a small pilot study examining links between Hostile/Helpless (HH) representations of caregiving in pregnancy and later child removal by child protective services. The sample was drawn from a replication study of the Minding the Baby^® attachment‐based home‐visiting intervention conducted in the United Kingdom, serving young first‐time mothers in under resourced communities. The HH classification system (Lyons‐Ruth et al.) was adapted for use with the Pregnancy Interview (PI) (Slade); 26 PIs were assessed (coders blinded) in a sample that included 13 mothers whose infants were removed from custody due to anticipated or documented maltreatment within 2 years of childbirth, and 13 mothers who did not have their infants removed. Mothers whose infants were removed from their custody had significantly higher HH scores than mothers of infants who were not removed from their care (F(1, 24) = 14.500, p < .001), and the relation between overall HH classification and infant removal status was also significant (χ²(1, N = 26) = 12.462, p < .001). Results suggest that prenatal maternal caregiving representations may predict postnatal relationship disruptions, and indicate the need for larger studies further testing this prenatal approach to maltreatment risk assessment in at‐risk populations.     

Increasing Psychological Capital: A Pre-Registered Meta-Analysis of Controlled Interventions

The aim of this meta-analysis was to evaluate the overall effectiveness of interventions designed to enhance psychological capital (PsyCap), well-being, and performance. We used inclusion criteria such as: to have an experimental design, the sample to be formed by employees or students, to contain a measure of PsyCap, and a control group. Forty-one trials (N_total = 3,911) met these criteria. The overall effect of the interventions on all PsyCap variables was significant but small (d = 0.34, k = 41, Z = 6.74, p < .001). Separate analyses on each of the PsyCap variables also revealed significant effects: small effects on developing PsyCap (d = 0.26, k = 9, Z = 4.37, p < .001), hope (d = 0.22, k = 5, Z = 2.26, p < .05), self-efficacy (d = 0.37, k = 18, Z = 4.11, p < .001), and optimism (d = 0.36, k = 12, Z = 2.52, p < .05), and a small to medium effect for resilience (d = 0.49, k = 12, Z = 3.61, p < .001). The effectiveness of the PsyCap interventions on well-being and performance is also significant.     

Adolescents’ Social Environment and Depression: Social Networks, Extracurricular Activity, and Family Relationship Influences

The present study examined components of adolescents’ social environment (social network, extracurricular activities, and family relationships) in association with depression. A total of 332 adolescents presenting for a routine medical check-up were self-assessed for social network risk (i.e., smoking habits of best male and female friends), extracurricular activity level (i.e., participation in organized sports teams, clubs, etc.), family relationship quality (i.e., cohesion and conflict), and symptoms of depression (i.e., minimal, mild, moderate/severe). Results of a forward linear regression modeling indicate that social environment components were associated with a significant proportion of the variance in adolescent depression (Adjusted R ² = .177, p ≤ .05). Specifically, adolescent females (β = .166, p < .01) and those having more smokers in their social network (β = .107, p < .05) presented with significantly greater depression symptoms. Conversely, adolescents who engaged in more extracurricular activities (β = −.118, p < .05) and experienced higher quality family relationships (β = −.368, p < .001) presented with significantly lower depressive symptoms. These findings highlight the important role that the social environment plays in adolescent depression, as well as yields new insights into socially-based intervention targets that may ameliorate adolescent depression. These intervention targets may be gender-specific, include positive social network skills training, increase adolescents’ engagement in organized activities, and attend to the quality of their family relationships.     

Motor assessment of preschool aged children: A preliminary investigation of the validity of the Bruininks–Oseretsky test of motor proficiency – Short form

The aim of this study was to examine the validity of the Bruininks–Oseretsky test of motor proficiency – short form (BOTMP-SF) [Bruininks, R. (1978). Bruininks–Oseretsky test of motor proficiency: Examiners manual. Circle Pines, MN] for the assessment of preschool aged children. Three-hundred and eighteen children 48–71 months old (M = 58.97 months, SD = 6.73) participated in the study. For the data analysis both an ANOVA and a MANOVA were applied with the total battery score and the 14 item scores being the dependent variables, respectively. Age was found to have a significant effect on both children’s total battery score (F(3, 314) = 110.65, p < .001, η² = .68) and 13 item scores (minimum F(3, 314) = 8.75, p < .001, minimum η² = .145). Although the aforementioned results represent an evidence for the validity of the BOTMP-SF, a closer study on the score of each item revealed a high percentage of zero scores on four items. Task difficulty has caused a floor effect, constituting a threat to the validity of the preschoolers’ motor assessment with the above battery. A modification of the battery items is suggested, so that the BOTMP-SF will give valid results for children 4–6 years old.     

A translational application of music for preschool cognitive development: RCT evidence for improved executive function,self-regulation,and school readiness

The benefits of active music participation and training for cognitive development have been evidenced in multiple studies, with this link leveraged in music therapy approaches with clinical populations. Although music, rhythm, and movement activities are widely integrated into children's play and early education, few studies have systematically translated music therapy-based approaches to a nonclinical population to support early cognitive development. This study reports the follow-up effects of the Rhythm and Movement for Self Regulation (RAMSR) program delivered by generalist preschool teachers in low socioeconomic communities. This randomized control trial (RCT) involved 213 children across eight preschools in disadvantaged communities in Queensland, Australia. The intervention group received 16–20 sessions of RAMSR over 8 weeks, while the control group undertook usual preschool programs. Primary outcome measures included executive function (child assessment of shifting, working memory, and inhibition) and self-regulation (teacher report), with secondary outcomes of school readiness and visual-motor integration. Data were collected pre- and post-intervention, and again 6 months later once children had transitioned into school. Results demonstrated significant intervention effects across the three time points for school readiness (p = 0.038, η_p² = 0.09), self-regulation (p < 0.001, η_p² = 0.08), and inhibition (p = 0.002 η_p² = 0.23). Additionally, the feasibility of building capacity in teachers without any music background to successfully deliver the program was evidenced. These findings are important given that children from low socioeconomic backgrounds are more likely to need support for cognitive development yet have inequitable access to quality music and movement programs.

Research Highlights

• Initial effects of self-regulation from a rhythm and movement program were sustained following transition into school for children from disadvantaged backgrounds.
• Delayed effects of inhibition and school readiness from a rhythm and movement program appeared 6 months post-intervention as children entered school.
• Generalist teachers can successfully implement a rhythm and movement program, which boosts critical developmental cognitive skills.