Equivalent MIRID models

It is shown that in the context of the Model with Internal Restrictions on the Item Difficulties (MIRID), different componential theories about an item set may lead to equivalent models. Furthermore, we provide conditions for the identifiability of the MIRID model parameters, and it will be shown how the MIRID model relates to the Linear Logistic Test Model (LLTM). While it is known that the LLTM is a special case of the MIRID, we show that it is possible to construct an LLTM that encompasses the MIRID. The MIRID model places a bilinear restriction on the item parameters of the Rasch model. It is explained how this fact is used to simplify the results of Bechger, Verhelst, and Verstralen (2001) and Bechger, Verstralen, and Verhelst (2002), and extend their scope to a wider class of models.     

Effects of programme context on memory of humorous television commercials

This study examined the effects of programme context on the memory of humorous television advertisements among a youth sample aged 16 to 18 years. Additionally, the relationship between the enjoyment and involvement properties of the programme and memory for advertisements were investigated. An experimental design was developed to test the memory for a set of six humorous and a set of six non-humorous advertisements within two programme contexts—a news bulletin and a comedy show. Findings indicated that unaided recall for advertisements was affected by programme type with memory for advertising being better from news than from comedy. Further, memory for humorous advertisements was better than that for non-humorous advertisements. Audience involvement with, and enjoyment of, the surrounding programme were found to be associated with poorer memory for advertisement content. Copyright © 1998 John Wiley & Sons, Ltd.     

Generation and mnemonic encoding induce a mirror effect in the DRM paradigm

Encoding tasks that increase memory accuracy are appealing from both practical and theoretical perspectives. Within the Deese/Roediger-McDermott (DRM) paradigm, we found that generating list words from anagrams (relative to reading) produced a mirror effect: enhanced recognition of studied words coupled with a reduction in false recognition. Signal detection analyses suggest that the increase in correct recognition was due to enhanced item-specific encoding of the list words, whereas the reduction in false recognition was due to enhanced strategic monitoring at test (i.e., a distinctiveness heuristic), rather than to reduced relational encoding at study. Further support for a distinctiveness heuristic account was obtained using both "theme judgment" instructions and within-group conditions. In our final experiment, we replicated this mirror effect using a purely mnemonic (self-referential) encoding task, showing that extra perceptual cues are not necessary to induce participants to adopt a successful memory-improvement strategy at test.     

Smoking,Methylation at AHRR,and Recidivism Risk in a Community Correction Sample of Individuals at High Risk for Recidivism

Individuals supervised by community correction programs have a high rate of tobacco use and high frequency of tobacco dependence. As compared with supervisees without tobacco dependence, probationers and parolees with tobacco dependence were more likely to abuse other substances and report poorer health. In this sample of 374 predominantly felon and repeat offenders, at high risk for recidivism, over 95% of subjects smoked or used other tobacco products, 87% were actively smoking at the time of interview, and 70% met criteria for lifetime tobacco dependence. Seventy-four percent had DNA demethylation, defined as methylation less than 83%, at the aryl hydrocarbon receptor repressor (AHRR) residue interrogated by cg0557592 at the time of interview. Seventy-eight percent exhibited four-year recidivism. Demethylation was associated with four-year recidivism in women, but not men. These findings suggest that methylation at cg05575921 serves as a semi-quantitative measure of both recent use and lifetime burden, that community correction populations continue to smoke at high risk, that measurement of methylation may add to the identification of female offenders at risk for recidivism, and that treatments to assist in cessation efforts are desperately needed. Copyright © 2015 John Wiley & Sons, Ltd.     

What can we learn from Plausible Values?

In this paper, we show that the marginal distribution of plausible values is a consistent estimator of the true latent variable distribution, and, furthermore, that convergence is monotone in an embedding in which the number of items tends to infinity. We use this result to clarify some of the misconceptions that exist about plausible values, and also show how they can be used in the analyses of educational surveys.     

Entwicklung und Evaluation eines interaktiven Films für Jugendliche zur Vermittlung von Gerichtswissen

An interactive movie for juvenile witnesses produced by the author was evaluated in terms of its effectiveness to convey court relevant knowledge to 16-year-old and 17-year-old students. A control group design was used. Controls received a brochure containing information comparable to the movie which was also developed by the author. The aim of the study was to empirically evaluate the movie in order to make it available to juvenile witnesses as an instrument for court preparation in the future. A total of 52 students aged 16 and 17 years at a training college were investigated and court knowledge was measured prior to testing. Participants in the treatment group then viewed the movie, which was produced by the author. The control group received a brochure containing information very similar to the contents of the movie. Approximately 2 weeks later, court relevant knowledge was again assessed and both treatment and control groups showed a strong and significant increase in court relevant knowledge. Comparing the groups showed that the effects tended to be stronger for the treatment group than for the control group. It was also investigated if legal misconceptions could be reduced by the interventions. Analyses indicated that effects were not significant and there was no significant difference between the groups. A significant increase of court relevant knowledge could be found for both treatment conditions. The weak effects concerning the reduction of legal misconceptions could be due to the fact that they were not explicitly presented in the movie but were treated more indirectly by presenting correct knowledge only.     

The right touch: Stroking of CT-innervated skin promotes vocal emotion processing

Research has revealed a special mechanoreceptor, called C-tactile (CT) afferent, that is situated in hairy skin and that seems relevant for the processing of social touch. We pursued a possible role of this receptor in the perception of other social signals such as a person’s voice. Participants completed three sessions in which they heard surprised and neutral vocal and nonvocal sounds and detected rare sound repetitions. In a given session, participants received no touch or soft brushstrokes to the arm (CT innervated) or palm (CT free). Event-related potentials elicited to sounds revealed that stroking to the arm facilitated the integration of vocal and emotional information. The late positive potential was greater for surprised vocal relative to neutral vocal and nonvocal sounds, and this effect was greater for arm touch relative to both palm touch and no touch. Together, these results indicate that stroking to the arm facilitates the allocation of processing resources to emotional voices, thus supporting the possibility that CT stimulation benefits social perception cross-modally.