Procesos de aprendizaje y terapia de conducta en la adicción a la heroína

Resumen

Múltiples principios de condicionamiento clásico y operante interaccionan en la adición a la heroína. Destacan la presencia de RC Compensatorias en forma de Síndrome de Abstinencia Condicionado (SAC) y distintos programas de reforzamiento en el estilo de vida, argot y efectos de la heroína. En evaluación conductual se estudian los correlatos subjetivos y psicofisiológicos del SAC; la validez externa de los autorregistros se logra mediante análisis de orina. En terapia de conducta los programas de amplio espectro se combinan con la intervención comunitaria y apoyo médico. A nivel metodológico se resalta la necesidad de usar múltiples criterios de medición, introducción del análisis multivariado y uso de diseños estadísticos, realización de seguimientos a largo plazo.     

Social exchange from the supervisor’s perspective: Employee trustworthiness as a predictor of interpersonal and informational justice

Using social exchange theory, we argue that because supervisors tend to value employee trustworthiness, they will be more likely to adhere to interpersonal and informational justice rules with trustworthy employees. Given social exchange theory’s assumption that benefits are voluntary in nature, we propose that the benevolence and integrity facets of trustworthiness will be more likely to engender social exchange relationships than the ability facet. Specifically, we propose that employees seen as having high benevolence and integrity engender feelings of obligation and trust from their direct supervisors, increasing the likelihood that these supervisors will adhere to interpersonal and informational justice rules, which in turn influences employee perceptions of justice. We find partial support for our mediated model using a field sample.     

The Influence of Confirmation Bias on Memory and Source Monitoring

Two experiments were conducted to examine whether recognition memory for information and/or its source are influenced by confirmation bias. During Phase 1, subjects were shown a summary about the issue of gun control and asked to indicate a position on the issue. During Phase 2, 12 abstracts (Experiment 1) or social media posts (Experiment 2) were shown, one at a time. Posts in Experiment 2 were associated with either friends or strangers. Participants indicated whether they wanted to read a more extensive version of each abstract (Experiment 1) or post (Experiment 2). Phase 3 was the memory phase. Thirty-two abstract titles (Experiment 1) or posts (Experiment 2) were shown one at a time. Participants indicated yes or no, and whether they recognized the titles/posts from the last phase. Recognition memory for information that supported the participants' viewpoint was higher than that for opposing information.     

Exploring the Effects of Value Diversity on Team Effectiveness

Purpose

The goal of the present study was to explore the potential impact of within-team value diversity with respect to both team processes and task performance.

Design/Methodology/Approach

We explored value diversity within a comprehensive framework such that all components of basic human values were examined. A sample of 306 participants randomly assigned to 60 teams, performed a complex hands-on task, demanding high interdependence among team members, and completed different measures of values and team processes.

Findings

Results indicated that value diversity among team members had no significant impact on task performance. However, diversity with respect to several value dimensions had a significant unique effect on team process criteria. Results were consistent with respect to the nature of the impact of value diversity on team process outcomes. Specifically, the impact of team value diversity was such that less diversity was positively related to process outcomes (i.e., more similarity resulted in more team cohesion and efficacy and less conflict).

Implications

The results indicated that disparity among teammates in many of these values may have important implications on subsequent team-level phenomena. We suggest team leaders and facilitators of teambuilding efforts could consider adding to their agendas a session with team members to analyze and discuss the combined value profiles of their team.

Originality/Value

This is the first study to highlight the unique impact of many unexamined, specific components of team diversity with respect to values on team effectiveness criteria.     

Why do we help? World change orientation as an antecedent of prosocial action

World change orientation refers to the extent to which one individual attributes his or her prosocial action to the function of making the world a better place. In Study 1, we developed a scale to measure this world change orientation [world change scale (WCS)] and to analyze its theoretical structure as a distinctive motivational orientation. In Study 2, participants were presented with a situation of need and subsequently given an unexpected opportunity to get involved in prosocial behavior. We then tested the hypothesis that degree of involvement is predicted by WCS when the situation is framed in terms of improving the welfare of the world, but by empathic concern when the situation is framed in terms of improving the welfare of a concrete victim. The results of both studies suggest that WCS refers to a distinct motivational orientation, which affects prosocial behavior above and beyond other motives. Copyright © 2012 John Wiley & Sons, Ltd.     

Quality of life in patients with alcohol dependence disorder with personality disorders: relation to psychological adjustment and craving

The purpose of this study is to determine the self-perceived quality of life of abstinent patients with alcohol dependence disorder during the first month of treatment, and how the presence of personality disorders, psychological adjustment, and the level of craving affect this perception. For this purpose, a sample was used comprising 65 participants with mean age of 43.26 years, of whom 70.8% were male and 29.2% female, with a mean duration of addiction to alcohol consumption of 11.83 years. The results show that quality of life is not related to the duration of abstinence or the course of the addiction. Moreover, the patients who present a personality disorder perceive poorer quality of life in areas such as health status, mood, and social relations. Self-perception of quality of life is affected by psychological adjustment and beliefs about craving. These data should be taken into account when considering quality of life as a measurement of the effectiveness of a treatment for drug addicts with personality disorders.     

Risk and protective factors in adolescents' drug use, and differences by age and sex

Adolescents' drug use has huge social and personal implications, so it is essential to identify risk and protective factors. In this research, the CTCYS was used with 2440 adolescents to detect risk and protective factors for drug use in the community, family, school and peers/individual; differences in risk and protective factors by age and sex; and relationships between risk and protective factors and substance use. Protective factors are high. Risk factors are high in the community, the school and the individual. Older adolescents have more risks and less protection than the youngest; and there are sex differences, because males have less protection and more risks. The risk factors more closely related to drug use are availability of drugs in the community, family attitudes favourable to drug use, family history of antisocial behaviour, early start and use of drugs by friends, perceived risk and attitudes favourable to drug use. In the protective factors, the role played by social skills for alcohol use is important.     

Effect of a retention interval between pre-exposure and conditioning on latent inhibition in humans using a blink conditioning procedure

Latent inhibition, retarded learning after pre-exposure to the to-be-conditioned stimulus, was examined using a blink conditioned procedure in humans. Experiment 1 showed that the procedure is suited to inducing the latent inhibition effect. In Experiment 2, the introduction of a 3-minute interval between pre-exposure and conditioning phases attenuated latent inhibition. These results contribute to identify the mechanisms involved in pre-exposure and subsequent conditioning of a stimulus, which is particularly important if we bear in mind that latent inhibition has been used repeatedly as an instrument to analyze the course of attentional processes in normal and pathological populations.     

Syndromes or symptoms in the assessment of aphasic patients?

The procedure generally used to diagnose aphasic patients consists of classifying them in one of the classic syndromes on the basis of the analysis of their symptoms. However, this taxonomy has several important problems, the main one being that it does not take into account the variability of aphasic patients, as there are many more disorder profiles than those included in the syndromes. In order to test the homogeneity of a sample of patients diagnosed with the classic taxonomy, 15 aphasic patients (5 Broca, 5 Wernicke and 5 Conduction) and 5 healthy controls were tested with nine comprehension and production tasks. Participants were aged 38 to 81 years old. The results indicate the existence of great variability in patients labeled with the same diagnosis, as revealed by the differences in within-group scores in each task, and a limited adjustment to the expected profile, with some patients showing symptoms allegedly corresponding to other syndromes. Our results call attention to the need to study each patient individually and interpret their disorders regardless of the syndromes.     

Assessment of the global intelligence and selective cognitive capacities in preterm 8-year-old children

The aim of this study was to assess various cognitive abilities such as attention, IQ, reasoning, and memory related to academic achievement in 8- and 9-year-old preterm children. A total of 141 children were assessed. The preterm group (=37 weeks) comprised 63 children and was compared to 78 full-term children. Attention was evaluated using the d2 Selective Attention test, and the IQ by the L-M form of the Stanford-Binet Intelligence Scale, establishing a profile of abilities: perception, memory, comprehension, reasoning, and verbal fluency. Significant differences in IQ were found between the preterm and full-term children. Of the cognitive abilities assessed, the only significant differences were found in verbal fluency, with preterm boys showing lower verbal fluency scores than full-term children. In conclusion, all preterm groups have attention ability similar to that of full-term children. However, preterm children obtain lower scores in intelligence measures. In addition, preterm boys have verbal fluency difficulties. Taking into account the increase in preterm births, suitable intervention programs must be planned to attend the difficulties found.