Adult Behavior Research Articles

Sex differences in physiological correlates of affectively driven decision-making behavior in adult ADHD

BackgroundSex differences in the symptomatology of adults with attention-deficit/hyperactivity disorder (ADHD) have often been overlooked when studying behavioral abnormalities. However, it is known that women exhibit considerably more stronger symptoms related to emotional competence than men. Since affective functions significantly influence the processing of risky decision-making and risk-engagement, we assume that risky behavior in ADHD is affected by sex differences. Therefore, we specifically investigated sex-specific effects on the interaction between emotionally induced changes in physiology and behavioral performance on a decision-making task.MethodsSkin conductance responses of twenty-nine adults with ADHD (n = 16 male; n = 13 female) and thirty-three adults in the control group (n = 14 male; n = 19 female) were recorded during the performance in a modified version of the Balloon Analogue Risk Task (BART). Additional questionnaires were used to reveal insights in the self-assessment of emotional competence, risk perception, and feedback sensitivity. Emotional arousal and decision-making behavior were analyzed using linear mixed-effects models.ResultsResults showed different effects of sex on risk behaviors in controls and ADHD. In contrast to healthy controls, female adults with ADHD showed a significantly greater risk engagement in the BART compared to males with ADHD. This contrary sex relation was not observed in skin conductance responses and revealed a significantly different sex-dependent correlation of body response and behavioral task performance in ADHD. Comparisons with results from self-assessments furthermore indicate a reduced behavioral self-perception in women with ADHD, but not in men.ConclusionIn summary, we found an altered interaction between physiological activity and risky behavior in women with ADHD. Thus, the present study indicates a reduced sensitivity towards the own bodily responses in women with ADHD, which could consequently cause increased risky DM behavior in daily life. The current results suggest that more consideration needs to be given to sex-specific effects on physiological processes and behavior in adults with ADHD.

An exploration into self-reported inactivity behaviours of adults with an intellectual disability using physical activity questionnaires.

Inactivity is a correlate of adverse health. Adults with an intellectual disability (ID) are more inactive than the general population and often present with more complex health issues. Self-reported activity questionnaires such as the International Physical Activity Questionnaire - Short Form (IPAQ-SF) and Rapid Assessment of Physical Activity (RAPA) questionnaire are the predominant source of activity information because of their low cost, non-invasive nature, ease of administration and interpretation of results. Correlates of inactivity among the general and ID populations were identified through a literature scoping review. Inactivity was measured using the RAPA and the IPAQ-SF. A multiple-imputation chained equation was used to impute missing data. Using Pearson chi-squared analyses, relationships between these correlates as well as covariates of age, sex, level of ID, body mass index (BMI) and aetiology, and RAPA and IPAQ-SF categories were explored. Logistic regression provided more detailed analyses. Results were summarised using the Systems of Sedentary Behaviour framework. Spearman correlations examined the IPAQ-SF and RAPA relationships. Three correlates for inactivity emerged from the IPAQ-SF and RAPA questionnaire. Up after 07:00h was a correlate for both. Difficulty walking 100yards and epilepsy were additional correlates of inactivity. Weak but significant correlations were seen between IPAQ-SF and RAPA scores. High inactivity levels are present in adults with an ID. The IPAQ-SF and RAPA questionnaires are weakly correlated.

Adolescent development of anxiety-related behavior and shifts in behavioral responsiveness to estradiol in female mice.

Early pubertal onset during adolescence is consistently linked with increased risk of anxiety and depression in girls. Although estradiol tends to have anxiolytic effects in adulthood, whether sensitivity to estradiol's anxiolytic actions increases during adolescence is not clear. Using a rodent model, the current study tested the hypothesis that a shift in sensitivity to the anxiolytic effects of estradiol occurs during adolescence. To test this hypothesis, prepubertal and adult C57BL/6 female mice were ovariectomized, implanted with vehicle- or estradiol-filled silastic capsules, and behavioral tested one week later in the open field and elevated zero maze. Our hypothesis predicted that estradiol would decrease anxiety-related behavior to a greater extent in adults than in adolescent females, however, our results did not support this hypothesis. In the open field, estradiol implants significantly decreased anxiety-like behavior in adolescent females (relative to vehicle) and had little to no effect on the behavior of adults. These data suggest that adolescence is associated with a downward shift in sensitivity to the anxiolytic effects of estradiol on behavior in the open field. In contrast, although estradiol treatment did not influence anxiety-like responses in the elevated zero maze in early adolescent or adult females, adolescent females displayed significantly higher levels of anxiety-like behavior than adults. These findings demonstrate that substantial changes in anxiety-related behavior occur during adolescence, including a context-dependent shift in behavioral responsiveness to estradiol.

Older adults make sense of their suicidal behavior: a Swedish interview study.

The aim of this study was to explore how individuals aged 70 or older living in Sweden understood a recent suicidal act, and what changed in them and around them in the aftermath. Four women and five men (age range 71-91 years) receiving care at a geriatric psychiatric outpatient clinic in a large Swedish city took part in two interviews about their most recent suicidal act. Most of the women and none of the men had engaged in prior suicidal acts. Interpretative phenomenological analysis was employed. The suicidal act was explained as a response to losses (in physical and cognitive functions, social roles and relationships) that rendered previous coping strategies unviable. The participants reported being dependent on a healthcare system that they experienced as indifferent and even dismissive of their suffering. The suicidal act was described as an unplanned act of despair. Positive changes followed for participants who reported having had suicidal ideation prior to the suicidal act and had insights into its triggers. Some gained access to needed medical care; others developed greater awareness of their psychological needs and became more effective at coping. Individuals who said that they had not had suicidal thoughts prior to the suicidal act and could not explain it reported no positive change in the aftermath. The respondents' narratives indicated gendered themes. Participants' age-related losses were in many cases exacerbated by negative interactions with health care providers, indicating that continued attention needs to be given to implicit ageism in medical professionals. The suicidal acts were described as impulsive, which was unexpected because a dominant belief is that older adult suicidal behavior is planned. One reason for the discrepancy may be that this study focused on nonfatal acts, and planned acts may be more likely to be fatal. Another reason could be shame due to suicide stigma. Alternatively, these acts were truly unplanned. The older adult suicide planning question should be addressed in larger studies across geographical and cultural settings. Future studies should also include questions about gender norms of suicidality and separately examine women's and men's data.

Facilitators and barriers of technology adoption and social connectedness among rural older adults: a qualitative study

ABSTRACT Background Social disconnection is a public health concern among rural Australian older adults. While research suggests technology can enhance social wellbeing and protect against social disconnection, many older adults are not digitally literate, and little is known as to why and how technology adoption could be promoted in rural contexts. This study aimed to (1) explore the barriers and facilitators of technology adoption among rural older adults and (2) determine the potential utility of technology to promote social connectedness in the aged population. The Theoretical Domains Framework and the Behaviour Change Wheel (BCW) were employed to gain a comprehensive understanding of the digital and social behaviours of rural Australian older adults. Methods Semi-structured interviews were conducted with a convenience sample of 33 rural older adults aged between 65 and 87 years. Interviews were conducted over the phone, audio-recorded, and transcribed. Interview transcripts were coded and analysed using thematic analysis and the BCW. Results Numerous barriers and facilitators of technology adoption were identified, with the most prominent being knowledge, perceived value, perceived self-efficacy, and social support. Findings suggest that older adults’ technology adoption is not simply a technical matter, but influenced by various individual, social, and environmental contexts. Consideration of these factors during development, marketing, training and implementation may facilitate technology adoption among older adults. With regard to social connectedness, several rural barriers emerged, including low population density, geographic isolation, limited community opportunities and poor public transport infrastructure. Conclusion Technology was consistently identified as a facilitator of the social experience, indicating that technology is a promising tool to enhance social connectedness among older adults, particularly those living in rural areas. Future research should focus on enhancing the capability, opportunity and motivation of older adults in technology adoption, with reference to the rural contexts.

Neurobiology and medico-legal aspects of suicides among older adults: a narrative review.

The task of preventing suicide in older adults is an important social burden as older adults aged above 65 are exposed to singular psychological aspects that increase suicide risks. Moreover, when an older adult corpse is found, the medico-legal inspection represents a fundamental tool to identify the exact cause of death, classifying or excluding it as suicide. In this scenario, this review aims to explore the neurobiological factors that could be related to suicidal behavior in older adults. A further goal of this review is the exploration of the medico-legal aspects surrounding older adult suicides, clarifying the importance of forensic investigation. Particularly, this review examines issues such as neurotransmitter imbalances, cognitive impairment, neuroinflammation, psychosocial factors related to geriatric suicide, and neurodegenerative diseases. Additionally, medico-legal aspects such as policy considerations, legal frameworks, mental health assessments, ethical implications and forensic investigation were explored. Considering the importance of this phenomenon, especially in western countries, a need has emerged for focused screening tools on suicidal behavior among older adults, in order to contain it. Therefore, this review makes an exhaustive appraisal of the literature giving insights into the delicate interplay between neurobiology as well as mental health in relation to older adult suicide within a medico-legal context. The comprehension of different aspects about this complex phenomenon is fundamental to propose new and more effective interventions, supporting tailored initiatives such as family support and improving healthcare, specifically towards vulnerable ageing societies to reduce older adult suicide risks.

Effect of patient-centered self-management intervention on glycemic control, self-efficacy, and self-care behaviors in South Asian adults with type 2 diabetes mellitus: A multicenter randomized controlled trial.

This study aimed to test the efficacy of patient-centered self-management intervention (PACE-SMI) to improve HbA1c, self-efficacy, and self-care behaviors in adults with type 2 diabetes mellitus (T2DM). In this multicenter, parallel two-arm randomized controlled trial, 612 adults with T2DM and HbA1c ≥ 7% were enrolled and assigned to the control group (n = 310) and the intervention group (n = 302) using stratified permuted block randomization. The control group received usual care, whereas the intervention group received usual care plus nurse-led, theory-driven, culturally tailored PACE-SMI, comprising eight weekly sessions of individualized education, counseling, behavioral training, and home visit. Outcomes were assessed at baseline, postintervention, and 3 months follow-up. Data at 3 months were provided by 583 participants (control: n = 295, intervention: n = 288). Per-protocol analysis showed that the intervention group had a lower mean HbA1c (8.49% [standard deviation (SD), 1.58]) than the control group (8.74% [SD, 1.62]), with small yet statistically significant mean difference of 0.25% (95% confidence interval [CI], -0.01 to 0.51; Cohen's d = 0.16; p = 0.03). Self-efficacy and self-care behaviors significantly improved in the intervention group (116.89 [SD, 25.50] and 70.01 [SD, 17.97]) compared to the control group (75.43 [SD, 18.99] and 51.54 [SD, 12.04]), with mean differences of 41.48 (95% CI, 37.83-45.13; Cohen's d = 1.84; p < 0.0001) and 18.56 (95% CI, 16.08-21.04; Cohen's d = 1.22; p < 0.0001), respectively. Linear regression analysis indicated the effect of PACE-SMI on HbA1c was significantly mediated by improvements in self-efficacy and self-care behaviors (R2 = 0.232, p < 0.001). PACE-SMI led to modest but significant improvement in HbA1c and substantial enhancements in self-efficacy and self-care behaviors in adults with T2DM.

Gender differences in posttraumatic stress symptoms, marital satisfaction, and parenting behaviors in adults following typhoon Lekima.

Belsky's parenting model provides insight into the relationship between parental psychological status and parenting behaviors. However, little is known about the unique associations of posttraumatic stress disorder (PTSD) symptoms with specific parenting behaviors. This study aimed to assess the associations of PTSD symptoms and three types of parenting behaviors (rejection, emotional warmth, and overprotection) with marital satisfaction, and to examine gender differences in these associations. Self-report questionnaires were used to survey 4,570 parents 3 months after Typhoon Lekima in China. The results showed that intrusion and avoidance symptoms had positively indirect associations with emotional warmth and negatively indirect associations with rejection and overprotection via marital satisfaction. However, negative cognitive and emotional alterations (NCEA) and hyperarousal symptoms had opposite relationships with three types of parenting behavior. A gender-moderated mediation relationship was found in the associations of PTSD symptoms and parenting behaviors via marital satisfaction. Marital satisfaction played a mediating role in the relationships between four PTSD symptom clusters and three types of parenting behavior in mothers, whereas in fathers, marital satisfaction mediated only the relationships of NCEA and hyperarousal symptoms with three types of parenting behavior. Marital satisfaction mediated the associations between four distinct PTSD symptom clusters and three types of parenting behavior, and a gender difference was found to be in these indirect relationships. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Knowledge and Opinions About Sustainable Nutrition and the Factors Associated With Sustainable and Healthy Eating Behaviors in Adults

Introduction.The aim of this study was to assess the knowledge and opinions about sustainable nutrition and the factors associated with sustainable and healthy eating behaviors among individuals aged 18 to 65 years. Methods. An online cross-sectional survey-based study included analysis of demographic and anthropometric characteristics, participants’ knowledge and opinions about sustainable nutrition, and their scores on the Sustainable and Healthy Eating Behaviors (SHEB) Scale. The snowball sampling method was used. Results. The study included 3,037 adults with a mean age of 25.62 ± 9.66 years. Participants scored highest on the factors of healthy and balanced nutrition and low fat, and lowest on the factors of local food and reducing meat consumption. The SHEB Scale scores for women (4.04 ± 1.12) were higher compared to men (3.83 ± 1.21) (p &lt; 0.001). A significant association was identified between age and SHEB Scale scores (OR=1.01, 95% CI 1.01-1.03), with no association observed with body mass index. Women were more likely to display sustainable and healthy eating behaviors compared to men (OR=1.45 95% CI 1.23-1.71), as were married participants compared to single participants (OR=1.87 95% CI 1.54-2.27). Conclusions. The results of this study indicate that sustainable nutrition is not well understood among adults. Advancing age, female gender, and being married were found to be associated with higher scores on the SHEB Scale.

Exploring Effects of Food Shaming on Consumers’ Food-Related Attitudes and Behaviors

Objective To compare attitudes and behaviors of American adults who have experienced food shaming versus those who have not. Design This was an online survey of 2003 US adults, followed by an additional 5 one-on-one in-depth interviews, for a total of 2008. Data were collected between September and November 2022. Participants US adults (n = 2008) recruited via commercial research panels. Main Outcome Measures Prevalence of food shaming, and attitudes and behaviors among adults who have experienced food shaming versus those who have not. Analysis χ 2 and analysis of covariance investigating associations between experience with food shaming and food-related attitudes and behaviors, controlling for body mass index where possible. Results Nearly 3 in 10 American adults report that they have experienced food shame. Experiencing food shame correlates with higher guilt and shame, greater likelihood to engage in regimented eating, and more prevalent, as well as negative, emotions around food and imagined interactions with food and nutrition professionals. Conclusions and Implications Food shaming is a phenomenon with wide-reaching impacts on attitudes and behaviors. We expect that this innovative study will inform registered dietitian nutritionists and other health professionals to help people develop healthy, sustainable relationships with food.

Factors predicting on health behaviors among older adults with hypertension in community

In Thailand the prevalence of hypertension continues to rise and health behavior of older adults is generally suboptimal. The purpose of this study was to identify the characteristics that can identify health behavior in older persons with hypertension. A cross-sectional design study was carried out on 123 hypertensive older persons in Koh Kaew Sub-District, Sela Phum District, Roi Et Province, who were chosen using a simple random selection procedure. In-person interviews with structured questionnaires were used for gathering data. This study utilized surveys to collect demographic information, health beliefs, and health habits. Percentage, mean, standard deviation, and stepwise multiple regression were used to evaluate the data. The results showed that there were four factors together predict and explain the variance of health behaviors among older adults with hypertension accounting R&lt;sup&gt;2&lt;/sup&gt; and adjusted R&lt;sup&gt;2&lt;/sup&gt; value were 44.10% and 42.20% with statistical significance including female (β=0.242, p=0.001), perceived susceptibility (β=0.419, p&amp;lt;0.001), perceived barriers (β=0.239, p=0.001), and perceived benefits (β=0.181, p=0.013). To improve quality of life among older persons with hypertension, this research proposed involving healthcare providers, families, and health volunteers in promoting their health habits.

The association between appetite and eating behaviors among Chinese female university students

BackgroundYoung females are at a higher risk of developing unhealthy eating behaviors. This study investigated the relationship between appetitive traits and eating behaviors among female university students. MethodsThe study participants were 520 female university students from a public university in Eastern China. Appetitive traits were assessed using the Chinese version of the Adult Eating Behavior Questionnaire (C-AEBQ). Data on eating behaviors, including food intake frequency, meal regularity, and dieting behavior, were collected using self-administered questionnaires. The body mass index (BMI) was calculated using self-reported data. Pearson's and Spearman's correlations were used to correlate appetitive traits with BMI and eating behaviors. Latent profile analysis (LPA) was used to identify different appetitive patterns, and logistic regression was used to analyze the relationship between different appetitive patterns and eating behaviors. ResultsTwo food-approach traits (food enjoyment and emotional over-eating) were positively correlated with BMI, while two food-avoidance traits (slowness in eating and satiety responsiveness) showed negative correlations. Food responsiveness was linked to a higher intake of delivered food, spicy food, and sugar-sweetened beverages, whereas satiety responsiveness was correlated with more frequent meal skipping. The LPA identified four appetitive patterns: food approachers, food approachers with emotional under-eating, food avoiders, and food avoiders with emotional over-eating. Food avoiders had significantly lower BMI than the other groups. Compared to food approachers, food avoiders skipped breakfast more frequently, and food avoiders with emotional over-eating skipped both breakfast and lunch more often. After adjusting for BMI, appetitive patterns showed no significant relationship with dieting behavior. ConclusionAmong female university students, appetitive patterns correlated with eating behaviors, and students with food-avoidance patterns had a higher risk of meal irregularity. These findings emphasize the importance of implementing trait- and pattern-specific approaches to promote healthy eating behaviors among female university students.

Factors Related to the Dementia Prevention Behavior among Community-dwelling Older Adults based on the Health Belief Model: A Cross-sectional Descriptive Study

Purpose: This study aimed to identify the relationships between perceived benefits, perceived barriers, self-efficacy, and dementia prevention behavior among community-dwelling older adults.Methods: This study employed a cross-sectional, correlational design using a structured questionnaire. This study participants were 218 older adults aged at least 65 years who visited a senior citizen center and lived in S City C Province. The survey was conducted in August 2022. Perceived benefits, perceived barriers, and self-efficacy were measured using a tool developed by Song &amp; Park (2018). Dementia prevention behavior was measured using a tool developed by Lim, Kim, and Kim (2018).Results: The scores for perceived benefits, perceived barriers, and self-efficacy were 5.52±0.69, 3.04±0.85, and 4.98±0.97 points, respectively (possible range: 1~7). The score for dementia prevention behavior was 3.91±0.51 (possible range: 1~5). Dementia health behavior was significantly correlated with perceived benefits (r=.32, p&lt;.001), perceived barriers (r=-.40, p&lt;.001), and self-efficacy (r=.64, p&lt;.001). Self-efficacy (β=.43, p&lt;.001), perceived barriers (β=-.23, p&lt;.001), and experience of using a dementia center (β=.20, p&lt;.001) explained 48.6% of the variance in dementia prevention behavior (F=19.63, p&lt;.001).Conclusion: Prior to developing a nursing intervention program to improve dementia health behavior in community-dwelling older adults, it is necessary to clarify perceived barriers and consider self-efficacy.

Self-Report of Restricted Repetitive Behaviors in Autistic Adults: A Systematic Review

Self-Report of Restricted Repetitive Behaviors in Autistic Adults: A Systematic Review

Effect of microwave radiation on adult neurogenesis and behavior of prenatally exposed rats

Postnatal neurogenesis appears to be highly sensitive to environmental factors, including microwave electromagnetic radiation (MWR). Here, we investigated the impact of MWR during intrauterine development on juvenile and adult neurogenesis in the rostral migratory stream (RMS) and the dentate gyrus of the hippocampus in the rat brain, as well as its effect on animal behavior. Female rats were exposed to MWR at a frequency of 2.45 GHz for 2 hours daily throughout pregnancy. The offspring of irradiated mothers survived to either juvenile age or adulthood. The brains of the rats were subjected to morphological analysis, assessing cell proliferation and death in both neurogenic regions. In the RMS, the differentiation of nitrergic neurons was also investigated. The effect of MWR on behavior was evaluated in rats surviving to adulthood. Prenatal MWR exposure caused significant changes in the number of proliferating and dying cells, depending on the age of the animals and the observed neurogenic region. In addition, MWR attenuated the maturation of nitrergic neurons in the RMS in both juvenile and adult rats. Morphological alterations in neurogenesis were accompanied by changes in animals’ behavior. Affected neurogenesis and changes in animal behavior suggest a high sensitivity of the developing brain to MWR.

Feather mercury content of grey-faced petrels (Pterodroma gouldi): Relationships with age, breeding success, and foraging behaviour, in known age individuals

Seabirds have been touted as excellent bioindicators of mercury pollution. We utilised grey-faced petrel (Pterodroma gouldi) feathers to assess interannual differences in total mercury (THg) concentrations in adults (2020−2021) and chicks (2019–2021) breeding in the Auckland region of New Zealand. For adults, we also correlated feather THg with bird age (3–37+ years) and breeding outcome (i.e., Non breeder, Egg failed, Chick reared) recorded for that season i.e., 2020 and 2021. Interannual differences in chick feather THg were matched with bulk stable isotopes (δ13C, δ15N) to map the influence of adult foraging behaviour on chick feather THg values.Adult feather THg levels were similar across the years investigated i.e., mean ± S.D. 38.2 ± 12.8 (2020), and 39.5 ± 14.7 (2021) ug g−1 (some of the highest THg values recorded for seabirds). A slight, but significant decrease in THg accumulation was evident as age increased but feather THg had no significant influence on breeding outcome.Interannual differences in chick feather THg concentrations were 7.78 ± 1.6 (2019), 4.23 ± 1.45 (2020) and 6.97 ± 4.41 (2021) μg g−1, (p < 0.01); and correlated with a significantly lower δ13C value i.e., −17.2 ± 0.4 ‰ (2019), −17.8 ± 0.3 ‰ (2020) and -17.6 ± 0.2 ‰ (2021). This suggests that the lower feather THg values in 2020 chicks resulted from more oceanic, rather than shelf-edge, prey being consumed by chicks that year. Values of δ15N in chick feathers remained consistent among years i.e., 15.2 ± 1.2 ‰ (2019), 15.2 ± 0.2 ‰ (2020) and 15.3 ‰ (± 0.4). Due to these interannual differences, we recommend using grey-faced petrel chicks to monitor Hg pollution over adults. Chicks are also subject to cultural harvests by Māori communities, offering partnership opportunities to generate mutually beneficial information streams for Māori communities and scientists alike.

Validation of the Adult Eating Behavior Questionnaire (AEBQ) in a young adult Black sample in the U.S.: Evaluating the psychometric properties and associations with BMI

The Adult Eating Behavior Questionnaire (AEBQ) is an instrument developed in the UK and used to examine appetitive traits in adults. The AEBQ is divided into four Food Approach subscales, namely; Enjoyment of Food, Emotional Overeating, Food Responsiveness and Hunger, and four Food Avoidance subscales, namely; Emotional Undereating, Food Fussiness, Slowness in Eating, and Satiety Responsiveness. The instrument has been validated in a number of countries. However, there is limited evidence to show the validation of the AEBQ in predominantly Black populations. The aim of this cross-sectional study was to validate the AEBQ in a Black young adult sample in the U.S.A. Participants (n = 229) consisted of young adults with an average age (20.97 ± 4.31) attending a Central Virginia Historically Black University. Reliability Analysis and Confirmatory Factor Analysis (CFA) were conducted. Correlations, as well as multivariate multiple linear regression models were estimated. Food Avoidance subscales demonstrated more internal consistency than the Food Approach subscales. The CFA results indicated a 7-factor model in which the Hunger subscale was eliminated to fit the data better overall. The Food Approach subscales demonstrated more convergent validity than the Food Avoidance subscales. BMI significantly predicted both Emotion Overeating and Emotional Undereating, as well as Food Fussiness. Moreover, both sex and age significantly predicted Emotional Undereating, Food Responsiveness and Hunger. Further, sex significantly predicted Emotional Overeating and Satiety Responsiveness. Lastly, depression predicted Emotional Undereating. In conclusion, this study provided some evidence to support the use of the AEBQ as a reliable and valid measure of adult eating behavior.

Back to Kindergarten? Paternalistic Care Behavior in Healthcare Contexts and Older Adults’ Mental Health

Back to Kindergarten? Paternalistic Care Behavior in Healthcare Contexts and Older Adults’ Mental Health

Embryonic exposure to environmental factors drives transmitter switching in the neonatal mouse cortex causing autistic-like adult behavior

Autism spectrum disorders (ASD) can be caused by environmental factors. These factors act early in the development of the nervous system and induce stereotyped repetitive behaviors and diminished social interactions, among other outcomes. Little is known about how these behaviors are produced. In pregnant women, delivery of valproic acid (VPA) (to control seizure activity or stabilize mood) or immune activation by a virus increases the incidence of ASD in offspring. We found that either VPA or Poly Inosine:Cytosine (which mimics a viral infection), administered at mouse embryonic day 12.5, induced a neurotransmitter switch from GABA to glutamate in PV- and CCK-expressing interneurons in the medial prefrontal cortex by postnatal day 10. The switch was present for only a brief period during early postnatal development, observed in male and female mice at postnatal day 21 and reversed in both males and females by postnatal day 30. At postnatal day 90, male mice exhibited stereotyped repetitive behaviors and diminished social interaction while female mice exhibited only stereotyped repetitive behavior. Transfecting GAD1 in PV- and CCK-expressing interneurons at postnatal day 10, to reintroduce GABA expression, overrode the switch and prevented expression of autistic-like behavior. These findings point to an important role of neurotransmitter switching in mediating the environmental causes of autism.

Development, validity and reliability of the healthy lifestyle behavior scale

BackgroundHealthy lifestyle behaviors encompass activities aimed at promoting, maintaining, or reclaiming health. Evaluating these behaviors accurately requires comprehensive, valid, and reliable tools.AimsThis study aimed to develop the Healthy Lifestyle Behavior Scale and evaluate its psychometric properties in the Turkish population.MethodsFor this methodological research, a cross-sectional online-based survey was conducted between 21 March 2023 and 31 March 2023 among 330 participants who were recruited via convenience sampling. The initial item pool included 90 items across seven domains (exercise, health responsibility, preventive health actions, sleep, stress and social support, nutrition, smoking, and alcohol). The content validity of the scale was verified by taking expert opinions. Construct validity and reliability were assessed using principal component analysis (PCA) and Cronbach's alpha.ResultsA total of 330 people were recruited for the study (65.2% female, mean age 34.2 ± 9.4 years). The final scale comprised 34 items: 5 on exercise, 4 on health responsibility, 4 on preventive health actions, 2 on sleep, 5 on social support, 3 on stress management, 5 on nutrition, 4 on smoking and 2 on alcohol. The construct validity analysis revealed a 9-factor structure explaining 62.35% of the variance (Kaiser–Meyer–Olkin value = 0.807). Internal consistency was confirmed with Cronbach's alpha (α = 0.863 for the scale, > 0.7 for subscales) and high item-total correlation.ConclusionsOur newly developed Healthy Lifestyle Behavior Scale demonstrated good validity and reliability. It outperformed existing scales, boasting higher alpha values for subfactors and explained variance. This scale is a robust tool for assessing healthy lifestyle behaviors in adults.