Validity Concerns in the Measurement of Women’s and Men’s Report of Intimate Partner Violence

The measurement of intimate partner violence (IPV) has proven to be more complex than originally anticipated and content and construct validity need to be greatly improved for IPV assessment. For measurement of IPV in the United States, these validity issues range from providing the most accurate wording for the content domain to controversies as to when violent actions are counted (e.g., self-defense) or whether to include mild aggression (e.g., psychological conflict tactics) that may be more normative and not harmful. The three major forms of IPV (i.e., physical, sexual, and psychological abuse) have distinct validity issues and may require different modalities for assessment. Gender needs to be considered when establishing construct validity due to differences in the meaning of aggression, impacts of abuse, and even patterns of violence for women and men. External threats to validity include potential bias of self-report and motivations when reporting on a partner, discrepancies in couples’ reports, the influence of response styles, and design issues affecting reporting. Traditional methods used to establish validity for IPV scales are reviewed and critiqued. Recommendations for enhancing validity in IPV assessment are provided.     

Emotional regulation as a mediator between interpersonal mistreatment and distress

Theory and research from the emotional labour literature focusing on mistreatment of employees by customers were used to examine interpersonal mistreatment by customers, coworkers, and supervisors. Specifically, we examined the relationships between all three of these sources of interpersonal mistreatment and psychological distress. We also examine the possibility that emotional regulation strategies mediated these relationships. In Study 1, we focused on surface acting as the mediating emotional regulation strategy. Using a sample of 256 working adults, the results of that study found a mediating role for surface acting between mistreatment and distress for mistreatment by customers and coworkers but not supervisors. In Study 2, we included measures of both deep acting and surface acting as potential mediators between sources of mistreatment and distress. Using a sample of 138 working adults, this second study again found that surface acting mediated the relationship between mistreatment and distress for mistreatment by customers and coworkers but not supervisors. Further, deep acting did not mediate any of the relationships between sources of mistreatment and psychological distress. We conclude surface acting plays an important mediating role in the relationship between interpersonal mistreatment by both customers and coworkers, and psychological distress.     

A Study of the SIRS With Severely Traumatized Patients

Clinical research has revealed that traumatized patients often elevate feigning indicators on psychological measures, which raises the possibility that traumatization and concomitant dissociation may lead to misclassifications of malingering. Within the domain of feigned mental disorders, the Structured Interview of Reported Symptoms (SIRS; Rogers, Bagby, &; Dickens, 1992 Rogers, R., Bagby, R. M. and Dickens, S. E. 1992. Structured Interview of Reported Symptoms professional manual, Odessa, FL: Psychological Assessment Resources.  [Google Scholar]) is a well established measure with excellent reliability and validity across clinical and forensic settings. Although recent studies have demonstrated its effectiveness with outpatient posttraumatic stress disorder (PTSD) samples, the SIRS usefulness with severely traumatized patients remains to be investigated. In this study, we recruited traumatized patients for a within-subjects simulation design in which we asked feigners to convincingly portray themselves as examinees claiming total disabilities. When compared to standard instructions, feigned presentations produced substantial effect sizes. Although the standard SIRS classifications produced moderately high sensitivities (M = .82), the false-positive rates were problematic. To minimize false-positives, we constructed a Trauma Index (TI) from 3 primary SIRS scales that appeared unaffected by severe trauma. Implementation of the TI substantially reduced false-positive rates (M = .09).     

Semantic diversity: A measure of semantic ambiguity based on variability in the contextual usage of words

Semantic ambiguity is typically measured by summing the number of senses or dictionary definitions that a word has. Such measures are somewhat subjective and may not adequately capture the full extent of variation in word meaning, particularly for polysemous words that can be used in many different ways, with subtle shifts in meaning. Here, we describe an alternative, computationally derived measure of ambiguity based on the proposal that the meanings of words vary continuously as a function of their contexts. On this view, words that appear in a wide range of contexts on diverse topics are more variable in meaning than those that appear in a restricted set of similar contexts. To quantify this variation, we performed latent semantic analysis on a large text corpus to estimate the semantic similarities of different linguistic contexts. From these estimates, we calculated the degree to which the different contexts associated with a given word vary in their meanings. We term this quantity a word’s semantic diversity (SemD). We suggest that this approach provides an objective way of quantifying the subtle, context-dependent variations in word meaning that are often present in language. We demonstrate that SemD is correlated with other measures of ambiguity and contextual variability, as well as with frequency and imageability. We also show that SemD is a strong predictor of performance in semantic judgments in healthy individuals and in patients with semantic deficits, accounting for unique variance beyond that of other predictors. SemD values for over 30,000 English words are provided as supplementary materials.     

Can semi-supervised learning explain incorrect beliefs about categories?

Three experiments with 88 college-aged participants explored how unlabeled experiences—learning episodes in which people encounter objects without information about their category membership—influence beliefs about category structure. Participants performed a simple one-dimensional categorization task in a brief supervised learning phase, then made a large number of unsupervised categorization decisions about new items. In all three experiments, the unsupervised experience altered participants’ implicit and explicit mental category boundaries, their explicit beliefs about the most representative members of each category, and even their memory for the items encountered during the supervised learning phase. These changes were influenced by both the range and frequency distribution of the unlabeled stimuli: mental category boundaries shifted toward the middle of the range and toward the trough of the bimodal distribution of unlabeled items, whereas beliefs about the most representative category members shifted toward the modes of the unlabeled distribution. One consequence of this shift in representations is a false-consensus effect (Experiment 3) where participants, despite receiving very disparate training experiences, show strong agreement in judgments about representativeness and boundary location following unsupervised category judgments.     

Rater Wealth Predicts Perceptions of Outgroup Competence

National income has a pervasive influence on the perception of ingroup stereotypes, with high status and wealthy targets perceived as more competent. In two studies we investigated the degree to which economic wealth of raters related to perceptions of outgroup competence. Raters’ economic wealth predicted trait ratings when (1) raters in 48 other cultures rated Americans’ competence and (2) Mexican Americans rated Anglo Americans’ competence. Rater wealth also predicted ratings of interpersonal warmth on the culture level. In conclusion, raters’ economic wealth, either nationally or individually, is significantly associated with perception of outgroup members, supporting the notion that ingroup conditions or stereotypes function as frames of reference in evaluating outgroup traits.     

Descending control to the nonparetic limb degrades the cyclic activity of paretic leg muscles

During anti-phased locomotor tasks such as cycling or walking, hemiparetic phasing of muscle activity is characterized by inappropriate early onset of activity for some paretic muscles and prolonged activity in others. Pedaling with the paretic limb alone reduces inappropriate prolonged activity, suggesting a combined influence of contralesional voluntary commands and movement-related sensory feedback. Five different non-target leg movement state conditions were performed by 15 subjects post-stroke and 15 nonimpaired controls while they pedaled with the target leg and EMG was recorded bilaterally. Voluntary engagement of the non-lesioned motor system increased prolonged paretic vastus medialis (VM) activity and increased phase-advanced rectus femoris (RF) activity. We suggest bilateral descending commands are primarily responsible for the inappropriate activity in the paretic VM during anti-phase pedaling, and contribute to the dysfunctional motor output in the paretic RF. Findings from controls suggest that even an undamaged motor system can contribute to this phenomenon.