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121.
Fei Gu Mike W.-L. Cheung 《The British journal of mathematical and statistical psychology》2023,76(3):605-622
Principal component regression (PCR) is a popular technique in data analysis and machine learning. However, the technique has two limitations. First, the principal components (PCs) with the largest variances may not be relevant to the outcome variables. Second, the lack of standard error estimates for the unstandardized regression coefficients makes it hard to interpret the results. To address these two limitations, we propose a model-based approach that includes two mean and covariance structure models defined for multivariate PCR. By estimating the defined models, we can obtain inferential information that will allow us to test the explanatory power of individual PCs and compute the standard error estimates for the unstandardized regression coefficients. A real example is used to illustrate our approach, and simulation studies under normality and nonnormality conditions are presented to validate the standard error estimates for the unstandardized regression coefficients. Finally, future research topics are discussed. 相似文献
122.
Eileen Britt Sara Soleymani Mark Wallace-Bell Anna Garland 《Journal of Employment Counseling》2023,60(1):42-59
Motivational interviewing (MI) is an evidenced-based approach for building and strengthening motivation for change. The effect of MI training on practitioner conversations with unemployed clients within a government work and income service was evaluated using a mixed-method approach, comprising a multiple-baseline across practitioner (n = 5) design and a pre/post quasi-experimental design. After workshop MI training, practitioners demonstrated greater MI skills in conversations with clients, and MI skills were maintained during the period of post-workshop feedback and coaching. There was also more change talk spoken by clients in conversations that occurred post-MI workshop training compared to pre-training, suggesting increased motivation for change. 相似文献
123.
Christopher M. Rudeen 《Journal of the history of the behavioral sciences》2023,59(3):246-267
Discussions of the rise of therapeutic culture have tended toward the abstract, in part due to a focus on theory. This article looks at the case of Ernest Dichter's motivational research, particularly a study conducted on fur coats in the late 1950s, to locate this broader cultural shift more materially. Motivational research was a broad project of study that aimed to uncover unconscious consumer desires using the tools of psychology and psychoanalysis. This project materialized culture first through the pen-and-paper projective test created for the study, which sorted styles of fur into different classifications of womanhood, and second through the fur coats themselves, which were granted by Dichter a psychological agency of their own in their relationship with middle-class women. Through this study, Dichter observed a shift in Americans' understanding of the self, a movement away from meeting physiological needs to addressing their inner lives; changing economic conditions had granted more income and free time with which to look inward, and Americans wanted consumer goods to aid in such self-discovery. Dichter suggested that the fur industry capitalize on this change by emphasizing the versatility of fur and the role of objects more generally in fostering creative self-expression. The advertising office was where theory was put into practice. In that way, it is a uniquely generative though often overlooked space from which to look into the rise of the therapeutic culture. 相似文献
124.
Linda J. Cooper David P. Wacker Jennifer J. McComas Kimberly Brown Stephanie M. Peck David Richman Janet Drew Pam Frischmeyer Thomas Millard 《Journal of applied behavior analysis》1995,28(2):139-153
We evaluated the separate components in treatment packages for food refusal of 4 young children. First, treatment packages were implemented until food acceptance improved. Next, a component analysis was conducted within a multielement or reversal design to identify the active components that facilitated food acceptance. The results indicated that escape extinction was always identified as an active variable when assessed; however, other variables, including positive reinforcement and noncontingent play, were also identified as active variables for 2 of the children. The results suggest that the component analysis was useful for identifying variables that affected food acceptance. 相似文献
125.
This study tested whether or not cross-cultural differences in attachment classification distributions result from systematic differences in coding practices. First, we investigated whether or not the interactive scales have been scored consistently in several different cross-cultural samples. Second, the Richters, Waters, and Vaughn (1988) functions were applied to address the question of whether or not attachment classifications were consistently based upon the same pattern of interactive behaviors. Third, cross-cultural coding differences were described from a multivariate perspective. Data sets from seven investigators in six countries were available for analysis. Analyses on this “multinational data set” revealed that except for distance interaction, the interactive scales in the two reunion episodes were scored in accordance with the original coding rules. Furthermore, a good to reasonable agreement appeared to exist between the original classifications and those computed by the functions, except for infants older than 20 months of age. The multivariate principal component analysis showed that classification groups across cultures were more alike than cultures across classification groups. Our data showed, therefore, that attachment classifications have been consistently coded across cultures. 相似文献
126.
Stephen G. West Leona S. Aiken Michael Todd 《American journal of community psychology》1993,21(5):571-605
Assessing the contributions of individual components in multi-component interventions poses complex challenges for prevention researchers. We review the strengths and weaknesses of designs and analyses that may be useful in answering three questions: (1) Is each of the individual components contributing to the outcome? (2) Is the program optimal? and (3), Through what processes are the components of the program achieving their effects? Factorial and fractional factorial designs in which a systematically selected portion of all possible treatment combinations is implemented are used to address question 1. Response surface designs in which each component is quantitatively scaled are explored in relation to question 2. Mediational analysis, a hybrid of experimental and correlational approaches, is considered in relation to question 3. Design enhancements are offered that may further strengthen some of these techniques. These techniques offer promise of enhancing both the basic science and applied science contributions of prevention research. 相似文献
127.
128.
An important aspect of psychotherapy research is the examination of the theoretical models underlying intervention approaches. Laboratory-based component research is one useful methodology for this endeavor as it provides an experimental means of testing questions related to intervention components and the change process they engage with a high level of control and precision. A meta-analysis was conducted of 66 laboratory-based component studies evaluating treatment elements and processes that are suggested by the psychological flexibility model that underlies Acceptance and Commitment Therapy (acceptance, defusion, self as context, committed action, values, and present moment), but also touches on a variety of contextual forms of cognitive behavior therapy. Significant positive effect sizes were observed for acceptance, defusion, present moment, values, mixed mindfulness components, and values plus mindfulness component conditions compared to inactive comparison conditions. Additional analyses provided further support for the psychological flexibility model, finding larger effect sizes for theoretically specified outcomes, expected differences between theoretically distinct interventions, and larger effect sizes for component conditions that included experiential methods (e.g., metaphors, exercises) than those with a rationale alone. Effect sizes did not differ between at-risk/distressed and convenience samples. Limitations with the meta-analysis and future directions for laboratory-based component research are discussed. 相似文献
129.
以日常生活中的条件推理语句为实验材料,采用大、小前提和结论依次呈现的“推断-判断”范式,利用事件相关电位(event-related brain potential, ERP)技术探讨了条件推理中否定前件下信念偏差效应的脑内时程动态变化。结果发现:在行为反应上,较信念促进,信念阻碍下的正确率更低反应时更长;在脑电上,两条件(信念阻碍和信念促进)诱发的ERP波形仅在大前提加工阶段出现明显的分离。这表明该推理下的信念偏差效应可能早在对大前提的语义表征阶段就已发生。 相似文献
130.
Although divergences between explicit and implicit processing of affective content during word comprehension have been reported, the underlying nature of those differences remains in dispute. Prior studies focused on either the timing or the spatial location of the effects. The present study examined the precise dynamics of the processing of negative words when attention is directed to affective content or to non-emotional properties by capitalizing on fine temporal resolution of the event-related potentials (ERPs) and recent advances in source localization. Tasks were used that required accessing knowledge about different semantic properties of negative and neutral words. In the direct task, participants’ attention was directed towards emotional information. By contrast, subjects had to decide whether the words’ referent could be touched or not in the indirect task. Regardless of being processed explicitly or implicitly, negative compared to neutral words were associated with more errors and greater key pressure responses. Electrophysiologically, affective processing was reflected in larger amplitudes to negative words in a late positive component (LPC) at the scalp level, and in increased activity in the pre-supplementary motor area (pre-SMA) at the voxel level. Interestingly, an interaction between emotion and type of task was observed. Negative words were associated with more errors, larger anterior distributed LPC amplitudes and increased activity in the posterior cingulate cortex (PCC) in the direct compared to the indirect task. This LPC effect was modulated by the concreteness of the words. Finally, a task effect was found in a posterior negativity around 220 ms, with enhanced amplitudes to words in the direct compared to the indirect task. The present results suggest that negative information contained in written language is processed irrespective of controlled attention is directed to it or not, but that this processing is reinforced in the former case. 相似文献