Psychological variables in the control of brain-computer interfaces

BCI (Brain-Computer Interface) is a system that allows interaction between the human brain and a computer. It is based on analyzing electroencephalographic signals (EEG) and processing them to generate control commands. The study analyzed the possible influence of psychological variables, such as the imaginative kinesthetic capacity and anxiety, in relation to performance in a BCI. All participants (4 male and 19 female students) completed the questionnaires and carried out a session of BCI to control their EEG signals in a virtual setting of a car along a straight road. The group was divided into two subgroups according to their EEG signals or differential responses obtained in the left-right discrimination. Study results showed no significant differences in cognitive variables of imagination or in anxiety. By comparing the degree of participants' BCI control, a new quantitative parameter for comparing performances and making decisions in signal processing was found. The findings, the ongoing research process to refine the control of a BCI, and the interaction of psychological and computer procedures are discussed.     

Career adaptability profiles and their relationship to adaptivity and adapting

Research on career adaptability predominantly uses variable-centered approaches that focus on the average effects in terms of the predictors and outcomes within a given sample. Extending this research, the present paper used a person-centered approach to determine whether subgroups with distinct adaptability profiles in terms of concern, control, curiosity and confidence can be identified. We also explored the relationship between the various adaptability profiles and adapting (career planning, career decision-making difficulties, career exploration, and occupational self-efficacy beliefs) and adaptivity (core self-evaluations and proactivity). Using latent profile analysis, we found distinct adaptability profiles among 350 German university students. Students with different profiles differed significantly in their levels of adapting. This finding was confirmed in a second study of 1226 students selected from the same population. In both samples, the adaptability profiles differed mainly in terms of their adaptability levels but not their shape. Moreover, in both samples, the students whose profiles indicated generally higher adaptability showed more adapting compared with the students whose profiles indicated generally lower adaptability. Study 2 also showed that students with higher-adaptability profiles showed significantly higher adaptivity. The results suggest that level effects dominate adaptability profiles, implying the existence of a general adaptability factor within university students that is meaningfully related to adapting and adaptivity.     

El procesamiento cognoscitivo de las oraciones negativas

Resumen

Dentro del estudio de la comprensión de las oraciones negativas, la revisión del modelo del procesamiento de la negación de Clark ha hecho surgir dos tipos de críticas.

En primer lugar, el gran «margen de libertad» que posee dicho modelo le hace excesivamente ambiguo y difícilmente contrastable, planteando serios problemas en la interpretación de los datos experimentales, y en la formalización del mismo.

En segundo lugar, junto a los teóricos de la «función natural semántica», se ha señalado la imprescindible necesidad de introducir, en el estudio del lenguaje, los llamados factores contextuales y pragmáticos.     

Latent profiles of work motivation in adolescents in relation to work expectations,goal engagement,and changes in work experiences

Motivation plays a key role in successful entry into working life. Based on a cross-sectional and a one-year longitudinal study, we used a person-centered approach to explore work-related motivation (i.e., autonomous goals, positive affect, and occupational self-efficacy) among 577 students in 8th grade (Study 1) and 949 adolescents in vocational training (Study 2). Based on latent profile analysis, in both studies we identified four groups that were characterized by different levels of overall motivation and one group characterized by low positive affect and mean levels in autonomous goals and self-efficacy. Profiles characterized by high levels of motivation showed the highest levels of positive work expectations and goal engagement and the lowest levels of negative work expectations in Study 1 and the highest levels of person-job fit, work engagement, and job satisfaction in Study 2. Moreover, latent difference score analysis showed that motivational profiles predicted changes in person-job fit and work engagement across one year but not in job satisfaction. The results imply that career counselors should be aware of characteristic motivational patterns of clients that may require specific counseling approaches.     

To hangover or not: trajectories of job satisfaction in adolescent workforce newcomers

The development of job satisfaction during the first months on the job often indicates a honeymoon hangover, with high levels of job satisfaction gradually declining. This effect is often explained by disappointed expectations that are informed by previous job experiences. However, research has not established whether a hangover pattern could also be observed in individuals without previous work experience. We explored the development of job satisfaction with 4 assessment points across the first 4 months after starting vocational training among 357 Swiss adolescents. On average, a hangover pattern in job satisfaction was confirmed. Using person-centred growth mixture modelling, we identified two groups with distinct trajectories. Although a majority showed a hangover pattern, a third of participants showed stable, high job satisfaction. We presumed that adolescents with more contextual and personal resources (i.e., perceived social support, occupational self-efficacy, core self-evaluations, and perceived person–job fit) would be more likely to avoid a hangover pattern. Results confirmed that the two groups differed significantly in all these resources, with the high stable satisfaction group showing higher resources. The results illustrate the importance of a diverse set of resources to facilitate a positive trajectory of job satisfaction at the beginning of work life.     

Psychometric Properties and Normative Data of the Zuckerman–Kuhlman Personality Questionnaire in a Psychiatric Outpatient Sample

The Zuckerman–Kuhlman Personality Questionnaire (ZKPQ; Zuckerman, Kuhlman, Joireman, Teta, &; Kraft, 1993 Zuckerman, M., Kuhlman, D. M., Joireman, J., Teta, P., &; Kraft, M. (1993). A comparison of three structural models for personality: The big three, the big five, and the alternative five. Journal of Personality and Social Psychology, 65, 757–768. doi:10.1037/0022-3514.65.4.757[Crossref], [Web of Science ®] , [Google Scholar]) was designed for the assessment of personality. The goal of this work was to determine the psychometric properties of the ZKPQ, as well as to establish normative data by gender and age in an outpatient sample attending primary mental health care services. We administered the questionnaire to 314 participants (34.7% males) 18 to 81 years old. The most prevalent primary diagnoses were mood (37.9%) and adjustment disorders (35.0%). Concerning the psychometric properties of the ZKPQ, the pattern of internal consistencies was similar to that previously found among general population, student, or clinical samples. Regarding gender differences, a general pattern was found, with women scoring higher on neuroticism and sociability, and lower on aggression-hostility. As for age, in general, scores declined with age. Norm-based decision making has the potential for significant and long-lasting consequences, and the quality of decisions based on score comparisons can be improved when scores are compared to norms fitted to the group of reference. The availability of the ZKPQ norms by gender and age in mental health care will benefit the accuracy of assessment and therapeutic decision making, providing more effective treatment planning overall.     

Discriminant validity of the ZKPQ in a sample meeting BPD diagnosis vs. normal-range controls

Widiger and Simonsen (2005) state that given the limitations of the categorical model of Personality Disorders classification proposals are to be expected for dimensional classifications. The purpose of this paper is to test the alternative five factorial model (AFFM) of personality in a sample with PDs. Subjects were administered the ZKPQ to test the discriminant capacity of the AFFM in classifying subjects diagnosed with BPD (n = 74) vs normal-range controls (n = 148) paired by age and sex, and identifying sensitive and/or specific dimensions that can be of help in diagnosing BPD. The results showed that high scores on N-Anx and Imp-SS, and low scores on Act are prognostic factors for being diagnosed with BPD. Likewise, this model correctly classified 88% of subjects with a kappa index of 0.73. The AFFM of personality appears to have a substantial power for predicting SCID-II interview-based BPD diagnosis.     

Spider monkey ranging patterns in Mexican subtropical forest: do travel routes reflect planning?

Although it is well known that frugivorous spider monkeys (Ateles geoffroyi yucatanensis) occupy large home ranges, travelling long distances to reach highly productive resources, little is known of how they move between feeding sites. A 11 month study of spider monkey ranging patterns was carried out at the Otochma’ax Yetel Kooh reserve, Yucatán, Mexico. We followed single individuals for as long as possible each day and recorded the routes travelled with the help of a GPS (Global Positioning System) device; the 11 independently moving individuals of a group were targeted as focal subjects. Travel paths were composed of highly linear segments, each typically ending at a place where some resource was exploited. Linearity of segments did not differ between individuals, and most of the highly linear paths that led to food resources were much longer than the estimate visibility in the woodland canopy. Monkeys do not generally continue in the same ranging direction after exploiting a resource: travel paths are likely to deviate at the site of resource exploitation rather than between such sites. However, during the harshest months of the year consecutive route segments were more likely to retain the same direction of overall movement. Together, these findings suggest that while moving between feeding sites, spider monkeys use spatial memory to guide travel, and even plan more than one resource site in advance. This contribution is part of the special issue “A Socioecological Perspective on Primate Cognition” (Cunningham and Janson 2007).