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221.
Hartmann Scheiblechner 《Psychometrika》2007,72(1):43-67
The (univariate) isotonic psychometric (ISOP) model (Scheiblechner, 1995) is a nonparametric IRT model for dichotomous and
polytomous (rating scale) psychological test data. A weak subject independence axiom W1 postulates that the subjects are ordered
in the same way except for ties (i.e., similarly or isotonically) by all items of a psychological test. A weak item independence
axiom W2 postulates that the order of the items is similar for all subjects. Local independence (LI or W3) is assumed in all
models. With these axioms, sample-free unidimensional ordinal measurements of items and subjects become feasible. A cancellation
axiom (Co) gives, as a result, the additive isotonic psychometric (ADISOP) model and interval scales for subjects and items,
and an independence axiom (W4) gives the completely additive isotonic psychometric (CADISOP) model with an interval scale
for the response variable (Scheiblechner, 1999). The d-ISOP, d-ADISOP, and d-CADISOP models are generalizations to d-dimensional dependent variables (e.g., speed and accuracy of response).
The author would like to thank an Associate Editor and two anonymous referees and also Professor H.H. Schulze for their very
valuable suggestions and corrections. 相似文献
222.
In this paper we introduce a latent variable model (LVM) for mixed ordinal and continuous responses, where covariate effects
on the continuous latent variables are modelled through a flexible semiparametric Gaussian regression model. We extend existing
LVMs with the usual linear covariate effects by including nonparametric components for nonlinear effects of continuous covariates
and interactions with other covariates as well as spatial effects. Full Bayesian modelling is based on penalized spline and
Markov random field priors and is performed by computationally efficient Markov chain Monte Carlo (MCMC) methods. We apply
our approach to a German social science survey which motivated our methodological development.
We thank the editor and the referees for their constructive and helpful comments, leading to substantial improvements of a
first version, and Sven Steinert for computational assistance. Partial financial support from the SFB 386 “Statistical Analysis
of Discrete Structures” is also acknowledged. 相似文献
223.
Matthias Adam 《Synthese》2007,158(1):93-108
Scientific claims can be assessed epistemically in either of two ways: according to scientific standards, or by means of philosophical
arguments such as the no-miracle argument in favor of scientific realism. This paper investigates the basis of this duality
of epistemic assessments. It is claimed that the duality rests on two different notions of epistemic justification that are
well-known from the debate on internalism and externalism in general epistemology: a deontological and an alethic notion.
By discussing the conditions for the scientific acceptability of empirical results, it is argued that intrascientific justification
employs the deontological notion. Philosophical disputes such as those on scientific realism can by contrast be shown to rest
on the alethic notion. The implications of these findings both for the nature of the respective epistemic projects and for
their interrelation are explored. 相似文献
224.
For various domains in proportional reasoning cognitive development is characterized as a progression through a series of
increasingly complex rules. A multiplicative relationship between two task features, such as weight and distance information
of blocks placed at both sides of the fulcrum of a balance scale, appears difficult to discover. During development, children
change their beliefs about the balance scale several times: from a focus on the weight dimension (Rule I) to occasionally
considering the distance dimension (Rule II), guessing (Rule III), and applying multiplication (Rule IV; Siegler, 1981). Because
of the detailed empirical findings the balance scale task has become a benchmark task for computational models of proportional
reasoning.
In this article, we present a large empirical study (N = 420) of which the findings provide a challenge for computational models. The effect of feedback and the effect of individually
adapted training items on rule transition were tested for children using Rule I or Rule II. Presenting adapted training items
initiates belief revision for Rule I but not for Rule II. The experience of making mistakes (by providing feedback) induces
a change for both Rule I and Rule II. However, a delayed posttest shows that these changes are preserved after 2 weeks only
for children using Rule I. We conclude that the transition from Rule I to Rule II differs from the transition from Rule II
to a more complex rule. Concerning these empirical findings, we will review performance of computational models and the implications
for a future belief revision model.
It is one Thing, to show a Man that he is in an Error, and another, to put him in possession of Truth. John Locke相似文献
225.
Research has found that neighborhood structural characteristics can influence residents' mental health. Few studies, however, have explored the proximal reasons behind such influences. This study investigates how different types of communities, in terms of environmental stressors (social and physical disorder and fear of crime) and social resources (informal ties and formal organizational participation), affect well-being, depression, and anxiety in adult residents. Data are from a survey of 412 residents nested in 50 street blocks. Block stressors and resources were cluster analyzed to identify six block types. After controlling for several individual- and block-level characteristics, results from multilevel models suggest that in communities facing relatively few stressors, higher levels of formal participation are associated with better mental health. Because high levels of formal participation were not found in communities with higher levels of stressors, the impact of participation in such contexts could not be examined. However, results suggest that in communities where stressors are more common, isolation from neighbors may have a protective effect on mental health. 相似文献
226.
The current 5-year accelerated longitudinal investigation modeled the developmental trajectories of aggressive behaviors in 10,107 predominantly minority (>70%; African American, American Indian, Asian American, and Hispanic) children and early adolescents (Kindergarten through 8th grade, 49% female youth) from lower to lower-middle socioeconomic strata. Based on a two-part latent growth model, findings suggest that the probability and frequency of aggressive behavior use decreases slightly (linear) through the elementary school years and then increases as children move into middle school (quadratic). Though mean level differences were found across ethnic and racial groups, socioeconomic strata, and particularly by sex at initial status, rates of change over time across all groups were invariant. Findings suggest that potential socialization differences, if any, occur pre-Kindergarten in all groups. 相似文献
227.
This research examined the associations between measures of sociotropic and autonomous personality, romantic attachment anxiety and avoidance, and corresponding attachment ratings across a range of different specific relationships with people whom participants regularly interacted (including romantic partners, friends, family members, and colleagues). Analyses using hierarchical linear modeling showed that sociotropy and autonomy were directly associated with respective ratings of relationship-specific anxiety and avoidance within non-romantic relationships. In contrast, domain-specific romantic attachment predicted relationship-specific attachment with romantic (but not non-romantic) partners, and, as hypothesized, mediated the associations between sociotropy and autonomy and relationship-specific attachment within this domain. Implications for the operationalization of sociotropy and autonomy as broad-bandwidth (personality-level) measures that assess more global summaries of regularities in the same dual dimensions identified in the attachment literature (i.e., attachment anxiety and avoidance) are discussed. 相似文献
228.
犯罪行为决策的理论与研究方法 总被引:4,自引:0,他引:4
犯罪行为是犯罪人决策的结果。犯罪行为决策研究旨在通过运用认知心理学的有关原理,说明犯罪行为实施之前的行为决策过程及影响因素,其成果能为国家制定刑事政策与犯罪预防政策等提供理论依据。犯罪行为决策的理论模型主要可分为犯罪理性模型、犯罪期望效用模型和犯罪前景理论模型。犯罪行为决策的研究方法主要采用心理物理法、过程追踪法、访谈法、投射测验法和犯罪统计法等。展望未来,应进一步探讨犯罪行为决策的理性与非理性问题,并加强对犯罪行为决策的验证性研究。 相似文献
229.
One of the most debated questions in psychology and cognitive science is the nature and the functioning of the mental processes involved in deductive reasoning. However, all existing theories refer to a specific deductive domain, like syllogistic, propositional or relational reasoning.
Our goal is to unify the main types of deductive reasoning into a single set of basic procedures. In particular, we bring together the microtheories developed from a mental models perspective in a single theory, for which we provide a formal foundation. We validate the theory through a computational model (UNICORE) which allows fine-grained predictions of subjects' performance in different reasoning domains.
The performance of the model is tested against the performance of experimental subjects—as reported in the relevant literature—in the three areas of syllogistic, relational and propositional reasoning. The computational model proves to be a satisfactory artificial subject, reproducing both correct and erroneous performance of the human subjects. Moreover, we introduce a developmental trend in the program, in order to simulate the performance of subjects of different ages, ranging from children (3–6) to adolescents (8–12) to adults (>21). The simulation model performs similarly to the subjects of different ages.
Our conclusion is that the validity of the mental model approach is confirmed for the deductive reasoning domain, and that it is possible to devise a unique mechanism able to deal with the specific subareas. The proposed computational model (UNICORE) represents such a unifying structure. 相似文献
Our goal is to unify the main types of deductive reasoning into a single set of basic procedures. In particular, we bring together the microtheories developed from a mental models perspective in a single theory, for which we provide a formal foundation. We validate the theory through a computational model (UNICORE) which allows fine-grained predictions of subjects' performance in different reasoning domains.
The performance of the model is tested against the performance of experimental subjects—as reported in the relevant literature—in the three areas of syllogistic, relational and propositional reasoning. The computational model proves to be a satisfactory artificial subject, reproducing both correct and erroneous performance of the human subjects. Moreover, we introduce a developmental trend in the program, in order to simulate the performance of subjects of different ages, ranging from children (3–6) to adolescents (8–12) to adults (>21). The simulation model performs similarly to the subjects of different ages.
Our conclusion is that the validity of the mental model approach is confirmed for the deductive reasoning domain, and that it is possible to devise a unique mechanism able to deal with the specific subareas. The proposed computational model (UNICORE) represents such a unifying structure. 相似文献
230.
What is encoded during a learning experience? In a learning situation, a training (acquisition) phase is often followed by a test phase. Acquisition-focused models (most associative models) emphasize information processing that occurs during training and assume that only summary statistics (associative values) are retained to influence behavior during testing. Performance-focused models (a k a "computational" models) emphasize information processing that occurs at test and often assume fairly comprehensive memory of prior experiences. In this article, we contrast these two families of models. We note that neither family can claim unique support from the various learning phenomena commonly cited as favoring one or the other position. Within each family, there are highly diverse models that preclude blanket generalizations. However, the acquisition-focused view that subjects retain only summary statistics suggests unrealistically impoverished memories relative to the fairly veridical memories that clearly are formed. But this oversimplifying assumption of acquisition-focused associative theories is exactly what has made them superior to performance-focused models to date in stimulating research. 相似文献