Esquizofrenia y lenguaje: una aproximación psicolingüística

Resumen

En el presente trabajo se revisan las investigaciones experimentales sobre las alteraciones esquizofrénicas con un doble objetivo: 1) comprobar hasta qué punto existe evidencia favorable a la idea de que estas alteraciones son específicas de la esquizofrenia, y 2) analizar la conexión existente entre tales investigaciones y algunos modelos psicológicos de producción verbal. La constatación de que los distintos modos de operativizar la noción de «lenguaje esquizofrénico» no hace sino reflejar los distintos modos en que los psicólogos del lenguaje han interpretado las nociones de «incoherencia», «ininteligibilidad» o «habla desviada» así como el reconocimiento del papel nuclear que estas nociones desempeñan en los modelos de producción verbal de discursos permiten considerar el estudio experimental del lenguaje esquizofrénico como una especie de «experimento natural» del que la Psicolingüística actual no parece poder prescindir todavía.     

Hacia una caracterización empírica del lenguaje esquizofrénico: de la descripción estructural de los discursos a la reconstrucción de los procesos implicados en la producción verbal desviada

Resumen

Partiendo de algunos de los conceptos y métodos desarrollados por la Psicolingüística experimental de orientación textual, se analizaron empíricamente 160 textos producidos por sujetos esquizofrénicos y normales para determinar si hay o no en los esquizofrénicos déficit específicos en la producción verbal y para comprobar, en su caso, cuáles son los niveles de procesamiento más afectados por tal déficit y cuáles son posibles determinantes funcionales. Los resultados del análisis de siete dimensiones lingüísticas, derivadas de la noción de «coherencia textual», confirmaron la existencia en los esquizofrénicos de alteraciones relacionadas con el diseño semántico y pragmático de los discursos, que guardan una estrecha relación con la mala política de asignación de recursos atencionales en la tarea, la dificultad para resolver problemas de ordenación lógica y el nivel global de severidad de la sintomatología de los pacientes. Los resultados confirmaron, asimismo, la utilidad de este tipo de estudios para la interpretación teórica de las perturbaciones del lenguaje y la necesidad de profundizar en aspectos metodológicos tales como los tipos de tareas, los grupos experimentales y los índices de medida utilizados en el análisis de las muestras lingüísticas.     

Entrevista con Heiner Ellgring

RESUMEN

En esta entrevista con el psicólogo Heiner Ellgring, investigador del Instituto Max Planck de Munich, se habla, entre otros temas, de las investigaciones del profesor Ellging dentro de la psicología social y la psicología clínica desde el punto de vista de la aplicación de conceptos de la etología, la psicología cognitiva y la psicología social en el estudio de las emociones y el análisis conductual no-verbal. La interpretación de este “lenguaje silencioso” de gestos, miradas y posturas, como fuente de conocimiento para la aplicación de las investigaciones de la Psicología básica en la interpretación y práctica clínica.     

Problemas metodológicos y conceptuales en el estudio de la función autorreguladora del habla

Resumen

Desde una perspectiva vygotskiana se revisa la evolución de las investigaciones relativas al desarrollo de la función reguladora del habla. Se discuten la metodología y el soporte conceptual de los estudios originales de Luria y de los intentos de replicación realizados por autores occidentales. Se presentan y comentan también varias aportaciones posteriores: tanto los nuevos planteamientos empíricos, como los nuevos desarrollos conceptuales. Finalmente, se señala la necesidad de atender a nuevos criterios en la elección de las tareas, de registrar las verbalizaciones espontáneas y de analizar el proceso de sociogénesis. Se concluye identificando dos factores influyentes en la emisión del habla egocéntrica (dificultad relativa de la tarea y percepción del contexto social) y distinguiendo, dentro del funcionamiento de la autorregulación verbal, entre el sistema activador, ligado a los aspectos de impulso, y el sistema de planificación y control, asociado a la propiedad de mediación semiótica.     

Social judgment of aggressive language: Effects of target and sender sex on the evaluation of slurs

We investigated the influence of the sex of the target and the sex of the sender on the judgment of slurs (verbal derogation). From previous research, we selected and clustered slurs into seven categories and respondents rated their degree of perceived insult in two consecutive questionnaire surveys (N = 281 and N = 224, respectively). Results confirm that slurs are generally judged as being more insulting when directed towards females than towards males. In comparison, differences in sex of sender were small. When directed towards females, slurs referring to “being loose” were rated as the most insulting. For both target sexes, remarks referring to homosexuality and physical unattractiveness were among those rated as the most insulting. Least insulting were slurs referring to unethical acts, lack of intelligence and cowardliness. A sex of respondent effect was found, suggesting that women rated slurs generally more insulting than men. The pattern of results showed considerable stability across surveys attesting for the reliability of the method for measuring the social evaluation of slurs.     

Verbal-Motor Attention-Focusing Instructions Influence Kinematics and Performance on a Golf-Putting Task

The authors examined how varying the content of verbal-motor instructions and requesting an internal versus external focus influenced the kinematics and outcome of a golf putting task. On Day 1, 30 novices performed 120 trials with the instruction to focus attention either on performing a pendulum-like movement (internal) or on the desired ball path (external). After 20 retention trials on Day 2, they performed 20 transfer trials with the opposite instruction. Group differences for retention and a group by block interaction showed that external instruction enhanced movement outcome. Kinematic data indicated that specific instruction content influenced outcomes by eliciting changes in movement execution. Switching from the external to the internal focus instruction resulted in a more pendulum-like movement.     

Attachment,Mental Health,and Verbal Aggressiveness in Personal Relationships

This study examined the association between verbal aggressiveness and individual differences in attachment orientations and mental health, defined as a state of emotional well-being. One hundred and thirty-two college-aged students completed measures assessing their attachment orientations, mental health, and verbal aggressiveness. Results indicated that security in attachment was negatively associated with verbal aggressiveness, and preoccupation with relationships was positively associated with verbal aggressiveness. In addition, mental health was negatively associated with verbal aggressiveness. Results indicated support for a statistical model in which mental health mediated the association between attachment orientations and verbal aggressiveness.     

Prior probabilities and representational momentum

In many previous experiments on representational momentum (in which memory for the final location of a moving target is displaced in the direction of target motion), participants judged whether a probe presented after a target vanished was at the same location where that target vanished or at a different location. The experiments reported here manipulated the actual or expected prior probability a same response to such a probe would be correct. In Experiment 1, a same response was correct on 10%, 30%, 50%, 70%, or 90% of the trials, but observers were not instructed regarding these probabilities. In Experiment 2, a same response was correct on 11% of the trials, but different groups of participants were instructed that a same response would be correct on 10%, 30%, 50%, 70%, or 90% of the trials. Probabilities of a same response to different probe positions, weighted mean estimates of representational momentum, hit rates and false alarm rates, and d′ and ß are reported. Representational momentum occurred in all conditions but was not influenced by actual or expected prior probability a same response would be correct. The data suggest representational momentum does not result from changes in sensitivity, and a distinction between performance bias and competence bias is introduced.     

Limitations in Verbal Fluency Following Heavy Burdens of Early Childhood Diarrhea in Brazilian Shantytown Children

The effects of heavy burdens of diarrhea in the first 2 years of life on specific executive control function like verbal fluency are not well understood. In previous studies, we have shown associations of early childhood diarrhea (ECD) with nonverbal intelligence and school functioning. Therefore, we postulated that ECD might affect early neuropsychological development leading to long-term deficits in normal cognitive development. Based on our extensive 14-year prospective cohort studies of early childhood diarrheal illnesses in a Brazilian shantytown community, we examined ECD correlations between specific impairments of higher mental function and executive skills in shantytown children 5–10 years later (now at 6–12) years of age. Specifically we examined whether heavy diarrheal illnesses correlate with reduced performance on selected tests of executive function. Our study, for the first time, suggests a disproportional impairment in semantic but not phonetic fluency in a subset of children with heavy burdens of diarrhea in their first 2 years of life even when controlling for maternal education, breastfeeding, and child schooling. Similar semantic decrements have been associated with impaired recovery from brain injury. These exploratory studies suggest the importance of verbal fluency tests to assess executive functioning in children challenged by poor nutrition and diarrhea in early life. In addition, our unique findings show the potential influences of early childhood diarrhea on language development that is so critical to productive adulthood and potentially set a foundation for new neuropsychological approaches, which assess early burdens of enteric illnesses on childhood development.     

The differential effect of background music on memory for verbal and visuospatial information

Background music is a part of our everyday activities. Considerable evidence suggests that listening to music while performing cognitive tasks may negatively influence performance. However, other studies have shown that it can benefit memory when the music played during the encoding of information is also provided during the retrieval of that information, in the so-called context dependent memory effect. Since controversial results may be attributed to the nature of the material to be memorized, the aim of the present study is to compare the potential effect of consistent background music on the immediate and long-term recall of verbal and visuospatial information. Experiment 1 showed that instrumental background music does not benefit nor decrease recall of a list of unrelated words, both at the immediate and the 48-hours-delayed tests. By contrast, Experiment 2 revealed that the same background music can impair immediate and therefore long-term memory for visuospatial information. Results are interpreted in terms of competition for neurocognitive resources, with tasks mostly relying on the same brain hemisphere competing for a limited set of resources. Hence, background music might impair visuospatial memory to a greater extent than verbal memory, in the context of limited capacity cognitive system. In conclusion, the nature of the material to be learnt must be considered to fully understand the effect of background music on memory.