Analyzing Job Analysis Data Using Mixture Rasch Models

An important piece of validity evidence to support the use of credentialing exams comes from performing a job analysis of the profession. One common job analysis method is the task inventory method, where people working in the field are surveyed using rating scales about the tasks thought necessary to safely and competently perform the job. This article describes how mixture Rasch models can be used to analyze these data, and how results from these analyses can help to identify whether different groups of people may be responding to job tasks differently. Three examples from different credentialing programs illustrate scenarios that can be found when applying mixture Rasch models to job analysis data. Discussion of what these results may imply for the development of credentialing exams and other analyses of job analysis data is provided.     

A comparison of different investigative interviewing techniques in generating differential recall enhancement and detecting deception

This study compared the Stepwise Interview, Cognitive Interview, and Reality Interview in detecting deception with inmates. The dependent measures were the amount of unique details provided during the free narrative and mnemonics and the number of words provided during the free narrative and mnemonics of each interview. The Stepwise Interview generated 58.3% accuracy, the Cognitive Interview generated 70.0% accuracy, and the Reality Interview generated 93.3% accuracy. The different tasks of these interviews increased the differences between honest and deceptive statements and therefore, increased the accuracy in detection of deception. Differential recall enhancement is used to explain the findings.     

Recall cues interfere with retrieval from visuospatial working memory

Visuospatial working memory allows us to hold multiple visual objects over short delays. It is typically tested by presenting an array of objects, then after a delay showing a ‘probe’ indicating which memory item to recall or reproduce by adjusting a target feature. However, recent studies demonstrate that information at the time of probe can disrupt recall. Here, in three experiments we test whether traditional memory probes, which contain features that compete with the feature to be recalled, may themselves interfere with performance. We asked participants to report the direction of one of the several coloured arrows in memory, based on its colour. First, we demonstrate that recall is better when the probe is initially just a coloured dot, rather than a coloured arrow which has to be adjusted to match orientation memory, consistent with interference from features of the probe itself. Second, this interference is present even when a mask follows the memory array, suggesting that the interference does not work by degrading immediate or iconic memory. Finally, when items are shown sequentially, the first and last items are invulnerable to probe interference. Our findings support recent theories of associative recall, in which probes reactivate features in WM, retrieving information by pattern completion.     

The Griffith empathy measure needs to be revised with attention to item coding direction: A reply to Dadds (2018)

The Griffith empathy measure (GEM; Dadds et al., 2008, Child Psychiatry and Human Development, 39, 111) needs to be revisited through further factor analytic and interpretational work. Studies using it in the manner proposed by Dadds et al., to make strong claims distinguishing between cognitive and affective empathy in children, are likely to be inaccurate or misleading (e.g., Georgiou, Kimonis, & Fanti, 2018, European Journal of Developmental Psychology, 1). It is quite likely, though, that the GEM's value can be dramatically enhanced if it is effectively revised and re-conceptualised.     

Documenting the multisensory and ephemeral: Navajo Chantway singers and the troubles of a “science” of ceremonialism

Even as American ethnology in the late‐nineteenth century continued to accumulate data about indigenous groups for comparative study, the surgeon‐turned‐ethnographer Washington Matthews found standardized documentary methods constricting, unable to reflect the complexity of a community's spiritual practices. Through studies of Navajo Indians in the 1880s and 90s, Matthews experimented with documentation techniques to capture the multisensorial and ephemeral elements of Navajo healing ceremonialism, such as the design of sandpaintings that were later destroyed as the rites concluded. Investigating his ethnographic strategies and his relationships with Navajo knowledge stewards, this article charts Matthews’ emerging conviction in social immersion and bonding with indigenous informants, tenets that predated the rise of cultural relativism in anthropology. The article argues that his experience among and tutelage from Navajo medicine “singers” reshaped Matthews’ documentary practices to emphasize the irreducibility of cultural facets to tabular columns, raising doubts about then‐dominant theories of social evolution.     

Trust,Perceived Risk,and Attitudes Toward Food Technologies1

There is substantial empirical evidence that both trust and risk perceptions influence public acceptance of new technologies. We reanalyzed 3 studies (on food technology) to compare whether (a) both trust and perceived risk are independently and directly associated with acceptance, or (b) the relationship between trust and acceptance is mediated by perceived risk. In support of Interpretation a, the (negative) correlation between trust and perceived risk was reduced when controlling for acceptance, whereas the correlation between trust and acceptance was somewhat reduced when controlling for perceived risk. Controlling for trust had little effect on the correlation between perceived risk and acceptance. These findings suggest that expressions of trust and perceived risk often might be reflections of prior attitudes toward the technology.     

Aging and time-sharing aspects of executive control

A particularly important aspect of executive functioning involves the ability to coordinate two simultaneous activities. The role of this aspect of executive functioning in adult-age differences in cognitive performance was examined in a study involving 150 adults between 20 and 91 years of age who performed the same visual-motor tracking task with three different primary tasks. The participants also performed several additional cognitive tasks that allowed examination of the relation of time-sharing efficiency to other types of cognitive functioning The results were consistent with the existence of a distinct time-sharing ability because the time-sharing costs in the three dual-task combinations were significantly correlated with one another but only weakly correlated with other cognitive variables. Increased age was associated with reductions in time-sharing ability, and greater efficiency in performing two tasks at once was associated with better performance on tasks assessing spatial, reasoning, and memory abilities. Although this pattern is what one would expect if executive processes contribute to age differences in cognitive functioning, the effects were smaller than those associated with a perceptual speed construct.     

How the brain processes causal inferences in text

Abstract— Theoretical models of text processing, such as the construction-integration framework, pose fundamental questions about causal inference making that are not easily addressed by behavioral studies. In particular, a common result is that causal relatedness has a different effect on text reading times than on memory for the text: Whereas reading times increase linearly as causal relatedness decreases, memory for the text is best for events that are related by a moderate degree of causal relatedness and is poorer for events with low and high relatedness. Our functional magnetic resonance imaging study of the processing of two-sentence passages that varied in their degree of causal relatedness suggests that the inference process can be analyzed into two components, generation and integration, that are subserved by two large-scale cortical networks (a reasoning system in dorsolateral prefrontal cortex and the right-hemisphere language areas). These two cortical networks, which are distinguishable from the classical left-hemisphere language areas, approximately correspond to the two functional relations observed in the behavioral results.