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881.
Alberto Maydeu-Olivares Uwe Kramp Carlos García-Forero David Gallardo-Pujol Donna Coffman 《Behavior research methods》2009,41(2):295-308
Despite a hundred years of questionnaire testing, no consensus has been reached on the optimal number of response alternatives
in rating scales. Differences in prior research may have been due to the use of various psychometric models (classical test
theory, item factor analysis, and item response theory) and different performance criteria (reliability, convergent/discriminant
validity, and internal structure of the questionnaire). Furthermore, previous empirical studies on this issue have tackled
the experimental design from a between-subjects perspective, thus ignoring intra-individual effects. In contrast with this
approach, we propose a within-subjects experimental design and a comprehensive statistical methodology using structural equation
models for studying all of these aspects simultaneously, therefore increasing statistical power. To illustrate the method,
two personality questionnaires were examined using a repeated measures design. Results indicated that as the number of response
alternatives increased, (1) internal consistency increased, (2) there was no effect on convergent validity, and (3) goodness
of fit worsened. Finally, the article assesses the practical consequences of this research for the design of future personality
questionnaires. 相似文献
882.
Multiple-baseline designs are an extension of the basic single-case AB phase designs, in which several of those AB designs
are implemented simultaneously to different persons, behaviors, or settings, and the intervention is introduced in a staggered
way to the different units. These designs are well-suited for research in the behavioral sciences. We discuss the advantages
and limitations for valid inferences, and suggest a statistical technique—randomization tests—for use with multiple-baseline
data, to complement visual analysis. In addition, we provide an extension of our SCRT-R package (which already contained means
for conducting randomization tests on single-case phase and alternation designs), for multiple-baseline AB data. 相似文献
883.
René Jagnow 《Phenomenology and the Cognitive Sciences》2009,8(4):551-572
In this paper, I defend a representationalist account of the phenomenal character of color experiences. Representationalism, the thesis that phenomenal character supervenes on a certain kind of representational content, so-called phenomenal content, has been developed primarily in two different ways, as Russellian and Fregean representationalism. While the proponents of Russellian and Fregean representationalism differ with respect to what they take the contents of color experiences to be, they typically agree that colors are exhaustively characterized by the three dimensions of the color solid: hue, saturation, and lightness. I argue that a viable version of representationalism needs to renounce this restriction to three dimensions and consider illumination to be a genuine phenomenal dimension of color. My argument for this thesis falls into two parts. I first consider the phenomenon of color constancy in order to show that neither Russellian nor Fregean representationalism can do justice to the phenomenal significance of local illumination. I subsequently formulate a version of representationalism that accounts for illumination by taking it as a phenomenal dimension of color. 相似文献
884.
This article presents the Spanish adaptation of the Affective Norms for English Words (ANEW; Bradley & Lang, 1999). The norms are based on 720 participants' assessments of the translation into Spanish of the 1,034 words included in the ANEW. The evaluations were done in the dimensions of valence, arousal and dominance using the Self-Assessment Manikin (SAM). Apart from these dimensions, five objective (number of letters, number of syllables, grammatical class, frequency and number of orthographic neighbors) and three subjective (familiarity, concreteness and imageability) psycholinguistic indexes are included. The Spanish adaptation of ANEW can be downloaded at www.psychonomic.org. 相似文献
885.
Systems biology is the rapidly growing and heavily funded successor science to genomics. Its mission is to integrate extensive bodies of molecular data into a detailed mathematical understanding of all life processes, with an ultimate view to their prediction and control. Despite its high profile and widespread practice, there has so far been almost no bioethical attention paid to systems biology and its potential social consequences. We outline some of systems biology's most important socioethical issues by contrasting the concept of systems as dynamic processes against the common static interpretation of genomes. New issues arise around systems biology's capacities for in silico testing, changing cultural understandings of life, synthetic biology, and commercialization. We advocate an interdisciplinary and interactive approach that integrates social and philosophical analysis and engages closely with the science. Overall, we argue that systems biology socioethics could stimulate new ways of thinking about socioethical studies of life sciences. 相似文献
886.
A conditioned taste aversion experiment tested context-switch effects on retrieval of conditioned stimulus (CS)-unconditioned stimulus (US) acquisition performance in rats. A context switch impaired performance when the target flavour was trained in a context where a different flavour underwent extinction. Conditioned taste aversion in the absence of previous extinction of the alternate flavour was not context dependent. It is suggested that the ambiguity in the meaning of the extinguished cue leads animals to pay attention to the context, so that the information learned in that context becomes context dependent. 相似文献
887.
People differ in the extent to which their self‐evaluations fluctuate in response to positive and negative events. This research tests whether self‐ambivalence predicts this self‐evaluative reactivity. Participants first completed measures of self‐ambivalence and baseline self‐esteem. Next, they were induced a success or failure experience in a cognitive task and finally rated their cognitive self‐evaluations (task‐specific ability, state self‐esteem) and affective reactions (self‐feelings, mood). Self‐ambivalence was associated with stronger effects of the success/failure manipulation on cognitive self‐evaluations but not on affective reactions, with baseline self‐esteem controlled. Possible underlying mechanisms are discussed. Copyright © 2006 John Wiley & Sons, Ltd. 相似文献
888.
The purposes of this study were to model the development of indirect aggression among a nationally representative sample of 1,401 Canadian children aged 4 at T2, 6 at T3, 8 at T4 and 10 at T5, and to examine predictors of trajectory group membership from T1 (age 2) child, familial, and parenting variables. Using a semi-parametric group-based modeling approach, two distinct trajectories were identified: "increasing users" comprising of 35% of the sample and "stable low users" comprising of 65% of the sample. Using logistic regression analyses to distinguish these two groups, we found that for girls, more frequent, increasing use of indirect aggression was associated with prior prosocial and physically aggressive behavior, low SES and low parental social support at age 2. For boys, increasing use of indirect aggression was associated with prior parenting issues at age 2-inconsistency and less positive parent-child interactions. Although this study provides unique information regarding the early development of indirect aggression and its predictors, more longitudinal research is needed to fully understand its development. 相似文献
889.
Separate mechanisms recruited by exogenous and endogenous spatial cues: evidence from a spatial Stroop paradigm 总被引:1,自引:0,他引:1
Funes MJ Lupiáñez J Milliken B 《Journal of experimental psychology. Human perception and performance》2007,33(2):348-362
The present experiments tested whether endogenous and exogenous cues produce separate effects on target processing. In Experiment 1, participants discriminated whether an arrow presented left or right of fixation pointed to the left or right. For 1 group, the arrow was preceded by a peripheral noninformative cue. For the other group, the arrow was preceded by a central, symbolic, informative cue. The 2 types of cues modulated the spatial Stroop effect in opposite ways, with endogenous cues producing larger spatial Stroop effects for valid trials and exogenous cues producing smaller spatial Stroop effects for valid trials. In Experiments 2A and 2B, the influence of peripheral noninformative and peripheral informative cues on the spatial Stroop effect was directly compared. The spatial Stroop effect was smaller for valid than for invalid trials for both types of cues. These results point to a distinction between the influence of central and peripheral attentional cues on performance and are not consistent with a unitary view of endogenous and exogenous attention. 相似文献
890.
Nelson JB Callejas-Aguilera JE 《Journal of experimental psychology. Animal behavior processes》2007,33(3):314-326
In 2 experiments, participants completed a computer task in which they judged the probability of outcomes occurring (e.g., flowers growing, a bug infestation) given cues (e.g., treatment of soil with a fictitious garden product). In each 2-phase experiment, cue X was associated with 1 outcome in Phase 1 and with a 2nd outcome in Phase 2. When the outcome in Phase 1 (e.g., X led to a bug infestation) was replaced in Phase 2 (e.g., X led to flowers growing), contextual control was observed (Experiments 1 and 2). Information learned in each phase was less likely to be retrieved when the cue was tested in a context different from the 1 where training occurred. When the 2nd outcome did not conflict with information acquired in the 1st phase (e.g., X led to flowers and bugs), no contextual control was observed (Experiment 2). Acquiring a 2nd association to X resulted in contextual control only when it conflicted with an association learned earlier. The authors discuss the role of interference produced when conflicting information is acquired in establishing contextual control. 相似文献