Categorization behaviour in adults,adolescents, and attention-deficit/hyperactivity disorder adolescents: A comparative investigation

Although significant progress has been made with respect to our understanding of categorization and concept learning behaviour in adults, much less is known about how this key capacity plays out with respect to more restrictive populations. This is unfortunate because much may be revealed about the nature of concept learning by examining the limits exhibited by special populations. With this tenet in mind, in what follows, we investigated key aspects of concept learning in terms of the unexplored comparative performance of three populations—adults, adolescents, and adolescents with attention-deficit/hyperactivity disorder (ADHD). To do so, we employed a novel parainformative experimental task involving categorical stimuli with four objects defined over three dimensions. The learning difficulty ordering for these types of three-dimensional stimuli has proven robust and has been replicated by several researchers. Indeed, in our experiment, we observed the same concept learning ordering in adults and adolescents, but not in ADHD adolescents: For example, the latter group showed greatly impaired categorization performance on stimuli characterized by an “exclusive-or” rule. However, categorization performance on such type of stimuli indicated good reliability in discriminating between adolescents with and without ADHD (receiver-operating characteristic, ROC?=?.82). We accurately predicted and accounted for these results using generalized invariance structure theory (GIST; Vigo, 2013. The GIST of concepts. Cognition, 129, 138–162), which posits that organisms detect invariance patterns in stimuli that are necessary precursors to concept formation.     

Hacia una estructuración teórica de la Psicología Diferencial

RESUMEN

Los autores enmarcan en sus coordenadas temporales y teóricas la obra de Royce y Powell, analizando en profundidad sus implicaciones. Consideran que el análisis estadístico multivariado, especialmente factorial, que la psicología diferencial ha adoptado desde hace algunos años resulta particularmente adecuado a la hora de desglosar inductivamente los contenidos y datos de la realidad. Sugieren que Royce y Powell presentan la esencia del nuevo enfoque, recogiendo aportaciones de la Teoría de la Información y de la Teoría General de Sistemas. Destacan, entre otras cuestiones, que la Teoría multifactorial-sistemática incluya el concepto de tipo, enfatice tanto las derivaciones cognitivas como afectivas y posibilite una evaluación comprehensiva de la persona en función de los perfiles en cada uno de los subsistemas. Sin embargo, encuentran susceptible de discusión el recurrir a un modelo jerárquico para estructurar el supra-sistema (la personalidad) y cada sub-sistema. Los autores consideran que la psicología diferencial, a través de estructuraciones como la de Royce y Powell, muestra que la validez ecológica nunca ha estado al margen de sus objetivos y presupuestos, y terminan afirmando que esta disciplina sintoniza con los nuevos paradigmas en psicología fiel a sus métodos y herramientas, pero abierta a desafíos tanto teóricos como empíricos.     

Validation of Hayamizu and Weiner's Achievement Goal Questionnaire among Uruguayan university students

Abstract

The aim of this study is to confirm the factor structure of a self-report measure of achievement goal tendencies (Hayamizu & Weiner, 1991) described in previous research, and examine the reliability and validity of scores in a sample of Uruguayan university students. A theoretical three-factor model is proposed (learning, performance and outcome goals), as well as one-factor models for each goal. Confirmatory factor analyses show that all models are identified, and solutions are conceptually correct. Our results suggest that outcome goals could be split into two correlated sub-dimensions related to achievement time (short and long term goals). Concurrent and predicted validity were established through significant correlations with perceived ability and academic achievement respectively. Conceptualisation of these findings and suggestions for future research are discussed.     

Evolutionary policy contexts and policies in preparation for the twenty‐first century

The importance of preparing now for the next century is emphasized. The author's field and Kondratiev theories as a basis for long‐range policymaking over periods of dynamic, recon‐figurational change are briefly reviewed, and a number of assumptions relevant to this kind of policymaking are provided.. Equilibrium and nonequilibrium structures and thinking are contrasted. Limitations to control associated with limits to knowledge and knowability are discussed. The possibility is considered that continuation of present policies and practices may accelerate movement along a trajectory to nowhere. Problem solutions are considered within the context of what is meant by a civilized society, and some 15 characteristics of a civilized society are proposed. The theoretical basis for preparation for the Twenty‐First Century is advanced. Deficiencies in the present dominant politicoeconomic theories of Western Capitalistic Democracy and Marxism are discussed, and the need for a new set of “founding fathers” is proposed. The importance of developing and implementing a replacement theory of similar magnitude to present theories is emphasized, and the nature of this theory is briefly sketched. Some recommendations for guided paradigm change are offered.     

Relational dynamics of charismatic organization: The complementarity of love and power

Abstract: This paper outlines a new theory of structural transformation in charismatic systems by postulating a complementary relationship between love and power. Radical reorganization of social organization, the function of charismatic systems, requires mobilizing and realigning enormous amounts of social energy. The source of this social energy is love. When patterned as communion, love fuses the group into an undifferentiated whole and releases the social energy previously locked up as institutionalized structure.

Released from structure or form, however, social energy is highly volatile and produces immense pressures towards instability. Counterbalancing the pressure from communion, a strong, collective order of power functions to harness and align the energy, thereby promoting group stability and enhancing the prospects for structural transformation. Data from a national study of sixty urban communal organizations are used to ground key aspects of the theory.     

Consciousness,Vorticity, and Dipoles

As spin is a fundamental feature of the universe, preliminary evidence suggests that its study could help in understanding consciousness. Research detailed in this article further develops the author's work in Keen (2005) Keen, J. 2005. Consciousness, intent, and the structure of the universe, Canada: Trafford. Available at http://www.trafford.com/robots/04-2320.html [Google Scholar]. The findings demonstrate that rotating objects generate fields that are also associated with mind-generated fields. Numerous quantitative properties of these fields generated by rotation are shown to be very different to fields associated with static objects. Dipole antenna radiation patterns are also discovered. The conclusions suggest that vorticity is not only involved in consciousness, but also has wider implications in understanding our universe, and therefore the subject warrants further research.     

High intelligence prevents the negative impact of anxiety on working memory

Using a large sample and the confirmatory factor analysis, the study investigated the relationships between anxiety, working memory (WM) and (fluid) intelligence. The study showed that the negative impact of anxiety on WM functioning diminishes with increasing intelligence, and that anxiety can significantly affect WM only in people below average intelligence. This effect could not be fully explained by the sheer differences in WM capacity (WMC), suggesting the importance of higher-level cognition in coping with anxiety. Although intelligence moderated the impact of anxiety on WM, it was only weakly related to anxiety. In contrast to previous studies, anxiety explained the substantial amount of WMC variance (17.8%) in less intelligent participants, but none of the variance in more intelligent ones. These results can be explained in terms of either increased motivation of intelligent but anxious people to cope with a WM task, or their ability to compensate decrements in WM.     

Syntactic priming in Chinese sentence comprehension: Evidence from Event-Related Potentials

Using the event-related potential (ERP) technique, this study examined the nature of syntactic priming effects in Chinese. Participants were required to read prime-target sentence pairs each embedding an ambiguous relative clause (RC) containing either the same verb or a synonymous verb. In Chinese, the word de serves as a relative clause marker. During reading a potential Chinese RC structure (either the prime or the target sentence), Chinese readers initially expect to read an Subject–Verb–Object (SVO) structure but the encounter of a relative clause marker de would make readers abandon the initial strategy and reanalyze the structure as a relative clause. A reduced P600 effect was elicited by the critical word de in the target sentence containing the same initial verb as in the prime sentence. No significant reduction of the P600 was observed in the target sentences in the synonymous condition. The results demonstrated that verb repetition but not similarity in meaning produced a syntactic priming effect in Chinese. The constraint-based lexicalist hypothesis and the argument structure theory were adopted to explain the syntactic priming effect obtained in the current study.     

文化和情境影响亲属词的概念结构

以摩梭人和汉族的高中生为对象,采用自由分类法,考察在满月酒、结婚和吊唁情境的亲属词概念结构,揭示微观文化情境对亲属关系认知的影响以及与宏观文化情境的交互作用。结果发现:(1)在不同情境下,摩梭人和汉族人对亲属词的分类既有相同之处,又存在差异。两个民族都看重"亲属的亲密程度"和"辈分",但摩梭人还区分"照顾者/被照顾者",汉族人还考虑"性别"和"亲属关系的性质";(2)摩梭人对亲属词的分类体现了母系文化的特征,重视舅舅和外甥在亲属关系中的地位和作用;汉族人对亲属词的分类体现了汉文化的特征,重视媳妇和孙辈在亲属关系中的地位和作用。(3)亲属概念具有核心特征与情境依赖特征。文化和情境通过概念特征的激活和分类标准的采择影响对亲属词的分类。     

Interfacial defects in YBa2Cu3O7-δ/SrTiO3(0 0 1) heterostructures studied by aberration-corrected ultrahigh-resolution electron microscopy

The microstructure of interfacial defects in YBa₂Cu₃O_7-δ/SrTiO₃(0?0?1) heterostructures has been investigated by aberration-corrected ultrahigh-resolution electron microscopy. We determine that c-axis-oriented YBa₂Cu₃O_7-δ thin films epitaxially grow on SrTiO₃(0?0?1) with two types of interface structure. The coalescence of nucleation sites with different types of interface structure leads to the formation of antiphase domain boundaries in YBa₂Cu₃O_7-δ thin films, which terminate at planar faults with different configurations near the interface. Stand-off misfit dislocations are observed and the dislocation core structure is explored. Based on the interface structure and interfacial defects, the initial growth mode of YBa₂Cu₃O_7-δ thin films on SrTiO₃(0?0?1) is discussed.