RESUMEN
Humans continuously learn new information. Here, we examined the temporal brain dynamics of explicit verbal associative learning between unfamiliar items. In the first experiment, 25 adults learned object-pseudoword associations during a 5-day training program allowing us to track the N400 dynamics across learning blocks within and across days. Successful learning was accompanied by an initial frontal N400 that decreased in amplitude across blocks during the first day and shifted to parietal sites during the last training day. In Experiment 2, we replicated our findings with 38 new participants randomly assigned to a consistent learning or an inconsistent learning group. The N400 amplitude modulations that we found, both within and between learning sessions, are taken to reflect the emergence of novel lexical traces even when learning concerns items for which no semantic information is provided. The shift in N400 topography suggests that different N400 neural generators may contribute to specific word learning steps through a balance between domain-general and language-specific mechanisms.
Asunto(s)
Potenciales Evocados/fisiología , Aprendizaje Verbal/fisiología , Adulto , Mapeo Encefálico , Electroencefalografía , Femenino , Humanos , Lenguaje , Estudios Longitudinales , Masculino , Tiempo de Reacción , Semántica , Vocabulario , Adulto JovenRESUMEN
OBJECTIVE: Our aim was to explore the feasibility, and efficacy of a Dialectical Behavior Therapy Skill Training Group (DBT-ST) as an add-on treatment for adult attention-deficit/hyperactivity disorder (ADHD) in Latin America. METHOD: Adults with ADHD (n = 31) with stable medication treatment for ADHD and residual symptoms (ASRS > 20) were randomly assigned to DBT-ST (n = 16) or treatment as usual (TaU; n = 15) for 12 weeks. Feasibility was accessed by attendance and completion rates at 12 weeks. Efficacy outcomes were measured with the ASRS, and performed at 0, 6, 12, and 16 weeks. RESULTS: The DBT-ST protocol had 81.25% completion rate, with a mean attendance of 87.25% of the sessions. No significant interactions between group and time were detected for outcome measures. DISCUSSION: The DBT-ST was feasible as add-on treatment for adult patients with ADHD in Latin America. Replicating previous findings, DBT-ST has shown no significantly higher improvement in ADHD symptoms in comparison with TaU. Registered at the Clinical Trials database (NCT03326427).
Asunto(s)
Trastorno por Déficit de Atención con Hiperactividad/terapia , Terapia Conductual Dialéctica , Adulto , Estudios de Factibilidad , Femenino , Humanos , Masculino , Resultado del TratamientoRESUMEN
Systematic review and meta-analysis of literature were conducted examining the effectiveness of the National Institute for Child Health and Human Development Investigative Interview Protocol in improving the quality of child forensic interviews. Online databases were searched for journal articles published between the years 2000 and 2013. Measures of interview quality were the type of interviewer utterances and the amount of information provided by children. Five studies met criteria for inclusion in the meta-analysis. Weighted mean of the effect sizes was calculated for each outcome measure. Protocol interviews had more invitations (g = 1.60) and fewer option-posing (g = -.95) and suggestive prompts (g = -.63) than standard interviews. Children interviewed by the protocol provided more central details (g = .90) in response to invitations than controls. Meta-analyses of a subset of preschool children samples revealed that protocol interviews had more invitations (g = 1.46), fewer suggestive prompts (g = -.61), and fewer option-posing prompts (g = -1.05) than controls. Findings corroborate results from previous studies that suggested the benefits of the protocol on the interviewers' performance and on children's informativeness. However, protocol did not show the same performance with regard to preschool children.