Estudio de las diferencias individuales en gastos atencionales,a partir de una tarea de papel y lápiz

Resumen

En este trabajo, que conjuga la tradición psicométrica con la perspectiva de procesamiento de información, se estudió si las diferencias en rendimiento observadas en los tests están asociados a diferencias individuales en gasto atencional. Fueron seleccionados 4 grupos extremos de sujetos en función de dos factores de inteligencia (verbal y espacial), los cuales realizaron una tarea de verificación de frases (tarea primaria) aisladamente o en conjunción con una de emparejamiento perceptivo (tarea secundaria). Se utilizaron como variables dependientes el número de aciertos de la tarea primaria, en ambas condiciones, y en la tarea secundaria, con tiempo limitado; y el número de errores en ambas tareas, sin límite de tiempo. Los sujetos altos verbales tuvieron más aciertos que los bajos verbales al ejecutar la tarea primaria en solitario, e iguales diferencias se encontraron entre altos y bajos espaciales; no se observaron diferencias en el número de errores. Al realizar ambas tareas concurrentemente, los altos verbales tienen mayor número de aciertos y cometen menos errores, en la tarea primaria, que los bajos verbales; los altos y bajos espaciales se diferencian únicamente en el número de aciertos. Estos resultados son discutidos y comparados con estudios diferenciales recientes.     

Visual search of emotional faces: The role of affective content and featural distinctiveness

We investigated the source of the visual search advantage of some emotional facial expressions. An emotional face target (happy, surprised, disgusted, fearful, angry, or sad) was presented in an array of neutral faces. A faster detection was found for happy targets, with angry and, especially, sad targets being detected more poorly. Physical image properties (e.g., luminance) were ruled out as a potential source of these differences in visual search. In contrast, the search advantage is partly due to the facilitated processing of affective content, as shown by an emotion identification task. Happy expressions were identified faster than the other expressions and were less likely to be confounded with neutral faces, whereas misjudgements occurred more often for angry and sad expressions. Nevertheless, the distinctiveness of some local features (e.g., teeth) that are consistently associated with emotional expressions plays the strongest role in the search advantage pattern. When the contribution of these features to visual search was factored out statistically, the advantage disappeared.     

The effect of self-referencing on memory for different kinds of source information

ABSTRACT

Self-referential processing has been proven to be effective in improving source memory. However, it is unclear whether different types of source information would be consistently enhanced when an item is self-referentially processed. In two experiments, the authors examined the influence of the self (compared with other-referencing and semantic processing) as well as learning intention (incidental/intentional learning) on memory for two types of source information (spatial location and colour) that differ in the amount of cognitive resources they require to be encoded in memory. Results show that self-referencing has enhanced memory for spatial location of words whatever this information is learned intentionally or incidentally, whereas it cannot facilitate memory for the colour of words under the intentional learning condition, nor can it under the incidental condition. These findings suggest that self-referential processing is beneficial in memory improvement but not all-powerful, a source self-reference effect is subject to source information type.     

The real relationship between short-term memory and working memory

Storage-oriented memory span tasks with no explicit concurrent processing are usually referred as short-term memory (STM) tasks, whereas tasks involving storage plus concurrent processing requirements are designated as working memory (WM) tasks. The present study explores a question that remains unsolved: Do STM and WM tasks clearly tap distinguishable theoretical constructs? For that purpose, a large sample of 403 participants was tested through 12 diverse memory span tasks. Half of those tasks are widely accepted as measures of STM, whereas the other half measure WM. The results show that STM and WM share largely overlapping underlying capacity limitations, suggesting that all memory span tasks tap essentially the same construct. Some implications are discussed.     

Bodily Thought and the Corpse Problem

Abstract: A key consideration in favour of animalism—the thesis that persons like you and me are identical to the animals we walk around with—is that it avoids a too many thinkers problem that arises for non‐animalist positions. The problem is that it seems that any person‐constituting animal would itself be able to think, but if wherever there is a thinking person there is a thinking animal distinct from it then there are at least two thinkers wherever there is a thinking person. Most find this result unacceptable, and some think it provides an excellent reason for accepting animalism. It has been argued, however, that animalists face an analogous problem of too many thinkers, the so‐called corpse problem, as they must accept both 1) that we are distinct from our bodies, as our bodies can and we cannot persist through death as corpses and 2) that our bodies can think. I argue that the best reasons animalists have for accepting the two claims that generate the distinctness part of the problem double up as reasons to reject the claim that our bodies can think, and vice versa. I argue further that Lockeans cannot similarly get around their problem of too many thinkers.     

An Experimental Test of Whether Informants can Report About Child and Family Behavior Based on Settings of Behavioral Expression

Researchers and practitioners conduct multi-informant assessments of child and family behavior under the assumption that informants have unique perspectives on these behaviors. These unique perspectives stem, in part, from differences among informants in the settings in which they observe behaviors (e.g., home, school, peer interactions). These differences are assumed to contribute to the discrepancies commonly observed in the outcomes of multi-informant assessments. Although assessments often prompt informants to think about setting-specific behaviors when providing reports about child and family behavior, the notion that differences in setting-based behavioral observations contribute to discrepant reports has yet to be experimentally tested. We trained informants to use setting information as the basis for providing behavioral reports, with a focus on parental knowledge of children’s whereabouts and activities. Using a within-subjects controlled design, we randomly assigned 16 mothers and adolescents to the order in which they received a program that trains informants to use setting information when providing parental knowledge reports (Setting-Sensitive Assessment), and a control program involving no training on how to provide reports. Relative to the control program, the Setting-Sensitive Assessment training increased the differences between mother and adolescent reports of parental knowledge, suggesting that mothers and adolescents observe parental knowledge behaviors in different settings. This study provides the first experimental evidence to support the assumption that discrepancies arise because informants incorporate unique setting information into their reports.     

Parental Illness Encouragement Behavior Among Children with Functional Gastrointestinal Disorders: A Factor Analysis with Implications for Research and Clinical Practice

The objective of the current study was to assess the factor structure of the Illness Behavior Encouragement Scale (IBES) by Walker and Zeman (1992) among children with functional gastrointestinal disorders (FGIDs). Two hundred seventy nine children (63 % female), and 135 primary caregivers (90.8 % mothers), recruited from a large Midwestern children’s hospital completed the IBES, a 12-item measure of parental behavior in response to abdominal pain episodes. Findings suggested the IBES possesses two conceptually distinct scales that are invariant across parent self- and child-report, and are consistent with previous factor analysis in a Dutch sample of children with headaches. Different types of parental behaviors exist that naturally cluster and diverge in reliable ways. Future research is warranted to determine if these different types of parental behavior may differentially influence illness outcomes among children with FGIDs.     

Religiosity and forgiveness among first-married and remarried adults

The current study examined the relationship between religiosity and forgiveness among first-married and remarried adults. Seven hundred and eighty-seven married adults from the Flanders region in Belgium completed the Enright Forgiveness Inventory and a four-item Religiosity Scale measuring forgiveness and religiosity, respectively. The results indicated that religiosity positively correlated (p?=?0.0001, r?=?0.15) with forgiveness. There was a significant difference between the religiosity of the first-married and the remarried adults (p?=?0.0001 (two-tailed) d?=?0.61). In an analysis by gender, the women showed a statistically significantly higher religiosity than did men (p?=?0.00005 (one-tailed) d?=?0.28). Among the demographic variables, age (r?=?0.26), number of children (r?=?0.35), and number of years in marriage (r?=?0.34) showed a statistically significant (p?=?0.0001) positive correlation with religiosity. The basic purpose of this study was to inform clinicians of the value of forgiveness and religiosity in therapeutic interventions.     

Level of Education and Category Fluency Task among Spanish Speaking Elders: Number of Words,Clustering, and Switching Strategies

ABSTRACT

It has been well documented that education influences the individual's performance on category fluency tasks but it is still unclear how this effect may differ across the different types of category tasks (i.e., animals, fruits, vegetables and clothing). This study aims (1) to analyze the effect of the level of education on four different types of category fluency tasks among elder Hispanic Americans and (2) to provide normative information on a population with different education levels that was previously screened for neurological and psychiatric conditions. In addition this study examines the semantic strategies used by these individuals to complete the fluency tasks. The sample included 105 healthy Hispanic individuals (age 55–98; 29 males and 76 females) divided into three education groups (<6, 6–11 and >11 years of education). Results showed that after controlling for age and gender, education has a main effect and is a strong predictor of performance in verbal fluency for the categories animals and clothing with increasing educational attainment being associated with higher category fluency scores and with more switches between categories. These findings suggest that the category fruit is less influenced by level of education than the other three semantic categories and may be a more appropriate test across different educational groups. Results from this study provide a reference for clinicians assessing verbal fluency in Spanish speaking populations.