Modeling population heterogeneity in appearance- and performance-enhancing drug (APED) use: applications of mixture modeling in 400 regular APED users

Appearance- and performance-enhancing drugs (APEDs) constitute a wide range of substances, including anabolic-androgenic steroids, nonsteroidal anabolics, and licit and illicit ergo/thermogenics. A great deal of heterogeneity exists in APED use patterns among weight-lifting men, and, consequently, little is known about how these patterns are related to side effect profiles or risk potential. In the current study, a sample of 400 adult men who were regular APED users completed an interactive Web-based instrument detailing information about APED use, side effects, and related indicators of risk. To explore the heterogeneity of APED use patterns, the authors subjected data on use patterns to (a) latent class analysis (LCA), (b) latent trait analysis (LTA), and (c) factor mixture analysis to determine the best model of APED use. Results indicated that a 4-class factor mixture model provided a better fit than LCA and LTA models. The authors also found that severity and latent class were uniquely associated with negative outcomes. Each of the 4 classes was associated with unique side effects, motivations, and participant use patterns. Implications for identifying pathological forms of APED use are discussed.     

Ignored visual context does not induce latent learning

Psychonomic Bulletin & Review - People usually become faster at finding a visual target after repeated exposure to the same search display. This effect, known as contextual cueing, is often...     

Psychosocial intervention follow-up in children with ADHD: effects on academic, emotional and social functioning

The aim of this investigation was to analyze the maintenance of the effects, one year after its conclusion, of an intervention that integrated three coordinated programs, implemented with 27 children with ADHD, aged between 7 and 10 years, their parents and teachers. The intervention lasted 10 weeks and included behavior-modification and cognitive-behavioral techniques, academic adaptations and social skills. We evaluated the effects on academic, emotional and social adjustment from the information provided by parents, teachers and classmates. The results confirm the maintenance in the follow-up evaluation of the improvements experienced after the treatment, especially in the academic and social areas, in which these children displayed the greatest difficulties.     

Prediction of Burnout in Volunteers

This work studies the personal experience of volunteering and several antecedent and consequent variables. We studied the effect of the amount of time dedicated to the organization, motivation, social support, integration in the organization, self‐efficacy, and characteristics of the work on a consequent variable of the volunteering experience; that is, burnout, with its 3 components of efficacy, cynicism, and exhaustion. The statistical analysis shows that the time dedicated to volunteering and the extrinsic motivations (i.e., social and career) predicts higher levels of burnout, whereas intrinsic motivations (i.e., values and understanding), life satisfaction, and integration in the organization are negatively related to burnout.     

Relationships Between Physical Symptoms,Emotional Distress,and Pain Appraisal in Fibromyalgia: The Moderator Effect of Alexithymia

Alexithymia is a personality construct that is frequently identified in fibromyalgia (FM). Previous studies have explored the relationship between alexithymia and emotional distress in this disease. Yet, the additional link with factors of pain appraisal is unknown. This study examined the moderating effect of alexithymia in the relationship between emotional distress and pain appraisal in 97 FM women. A control group of 100 healthy women also participated in the study. All participants completed several self-reports about pain experience, sleep quality, impairment, emotional distress, pain appraisal, and alexithymia. FM women showed significantly more difficulty in identifying and describing feelings, but less externally oriented thinking than healthy women. In the clinical group, difficulty in identifying feelings and difficulty in describing feelings significantly correlated with lower sleep quality, higher anxiety and depression, and increased pain catastrophizing and fear of pain. Difficulty in describing feelings significantly correlated with higher pain experience and vigilance to pain. Externally oriented thinking was not correlated with any of the clinical variables. Difficulty in identifying feelings moderated the relationship between anxiety and pain catastrophizing, and difficulty in describing feelings moderated the relationship between anxiety and fear of pain. Implications of the findings for the optimization of care of FM patients are discussed.     

Movement Variability Increases With Shoulder Pain When Compensatory Strategies of the Upper Body Are Constrained

This cross-sectional study analyzed the influence of chronic shoulder pain (CSP) on movement variability/kinematics during humeral elevation, with the trunk and elbow motions constrained to avoid compensatory strategies. For this purpose, 37 volunteers with CSP as the injured group (IG) and 58 participants with asymptomatic shoulders as the control group (CG) participated in the study. Maximum humeral elevation (Emax), maximum angular velocity (Velmax), variability of the maximum angle (CVEmax), functional variability (Func_var), and approximate entropy (ApEn) were calculated from the kinematic data. Patients' pain was measured on the visual analogue scale (VAS). Compared with the CG, the IG presented lower Emax and Velmax and higher variability (i.e., CVEmax, Func_var, and ApEn). Moderate correlations were achieved for the VAS score and the kinematic variables Emax, Velmax and variability of curve analysis, Func_varm, and ApEn. No significant correlation was found for CVEmax. In conclusion, CSP results in a decrease of angle and velocity and an increased shoulder movement variability when the neuromuscular system cannot use compensatory strategies to avoid painful positions.     

Conditional or Unconditional Forgiveness? An Instrument to Measure the Conditionality of Forgiveness

Among the beliefs and concepts people hold about the nature of forgiveness, their notions of conditionality and unconditionality have not received sufficient study. The concept of conditional forgiveness posits that before forgiveness can be granted, the offender must take certain steps and meet specific conditions. From an unconditional forgiveness concept, the victim can forgive independently of the behavior of the wrongdoer. Hence, the aim of our study has been to develop a strong psychometric instrument to measure the beliefs people hold about the conditionality of forgiveness. This article presents the development and validation of a tool to measure these beliefs. Study 1 comprised 181 participants, whereas 492 conformed Study 2 and 109 took part in Study 3. Internal consistency and validity were analyzed. Exploratory factor analysis and confirmatory factor analysis were conducted, along with correlational analysis to test convergent validity, stability, and prediction capability. Results show a two-dimensional structure of the Conditional–Unconditional Forgiveness Scale, indicating the appropriateness of this tool to assess beliefs about the conditionality of forgiveness. The belief in the unconditional nature of forgiveness showed positive and significant correlations with all the measurements of offense-specific forgiveness. On the other hand, the belief that forgiveness should be conditional showed lower correlations with all the forgiveness measurements. Not only the ultimate level of forgiveness the subjects experienced but also their emotional experience of the process can be very different depending on their views of forgiveness, among them their beliefs about conditionality.     

Affect Balance as Mediating Variable Between Effective Psychological Functioning and Satisfaction with Life

Well-being is a multidimensional construct which includes hedonic and eudaimonic aspects. Hedonic well-being is focused on happiness, while eudaimonic well-being is focused on developing of human potential. Most hedonic psychologists have used measures of subjective well-being (SWB), which have two components: a cognitive evaluation of the satisfaction with one’s life as a whole, and an affective component that refers to predominance of positive over negative affect (or affect balance). Eudaimonic well-being, sometimes labelled psychological well-being (PWB), includes subjective evaluations of effective psychological functioning. Ryff’s (1989a) model of PWB, which is included within the eudaimonic perspective, conceives well-being as a multidimensional construct made up of life attitudes like self-acceptance, positive relation with others, autonomy, environmental mastery, purpose in life, and personal growth. Research has revealed that SWB and PWB are related, but, they are also distinguishable, since they were differentially related to various criteria. The main goal of the present study was to explore how these two different aspects of well-being are related. Two hundred and fifty-five individuals (114 male and 141 female, mean age = 36.46, standard deviation = 10.83) participated in the study. All the components of well-being were strongly interrelated, and mediational analysis showed that affect balance mediated the relationships between some positive life attitudes and satisfaction with life. Future research, using longitudinal designs, should clearly establish the causal relationships between the different aspects of well-being.     

Emotional processing in people with obsessive-compulsive symptomatology

The present study was aimed at assessing obsessive-compulsive symptomatology based on visualization of affective pictures, elaborated following Peter Lang's dimensional model of emotion. Participants were 370 psychology students at Malaga University, selecting those with high and low scores in obsessive-compulsive symptomatology. All participants assessed a set of pictures containing obsessive-compulsive cues using the three scales of the Self-Assessment Manikin: affective valence, arousal, and control/dominance. The results show that participants with high scores in obsessive-compulsive symptomatology experience reduced control over the affective pictures and rate as more unpleasant the neutral and obsessive-compulsive pictures.