This study examined the utility of a paired-choice preference assessment in predicting reinforcer efficacy for a 13-month old with a history of prenatal drug exposure. First, two paired-choice assessments were conducted one week apart, using the same items. A high level of correspondence between the two assessments was observed. Next, a reinforcer…

In many areas of language acquisition, researchers have suggested that semantic generality plays an important role in determining the order of acquisition of particular lexical forms. However, generality is typically confounded with the effects of input frequency and it is therefore unclear to what extent semantic generality or input frequency…

One hundred and twelve university students completed 7 tests assessing word-reading accuracy, print exposure, phonological sensitivity, phonological coding and knowledge of English morphology as predictors of spelling accuracy. Together the tests accounted for 71% of the variance in spelling, with phonological skills and morphological knowledge…

Despite the known benefits of breastfeeding, many women do not breastfeed their infants or stop breastfeeding early. This study examines the effects of prenatal intention and initial breastfeeding experiences on breast-feeding initiation and duration among 1,665 U.S. women completing questionnaires on infant feeding practices. Outcomes included no…

Relationship quality (rapport) between people with developmental disabilities and their caregivers has long been suggested as an important variable influencing the likelihood of problem behavior. However, to date, the association between rapport and problem behavior has not been systematically investigated. The authors evaluated a multimethod…

Grade point average (GPA) often correlates highly with variables of interest to educational researchers and thus offers the potential to greatly increase the statistical power of their research studies. Yet this variable is often underused in marketing education research studies. The reliability and validity of the GPA are closely examined here in…

This study has investigated the impact of personality traits on students' academic achievement in an undergraduate marketing course taught by the same professor. All personality traits except extraversion positively and significantly predicted students' overall grade. Extraversion was positively related (r =0.140) but not statistically…

This experiment examined delayed self-recognition in 24 2.5-year-old and 24 3-year-old children. Children were marked covertly with a sticker on their forehead while playing a game, after which their photograph was taken. When shown this photograph, the 3- but not the 2.5-year-olds reached to remove this sticker reliably. However, the older…

Prior research into factors predicting arrest in domestic violence cases is limited in three regards: (a) no examination of whether mandatory arrest policies are associated with increased risk of arrest across multiple jurisdictions; (b) little consideration of whether police organizational characteristics influence arrest in such cases; and (c)…

Predictors for repetition of suicide attempts were evaluated among 92 adolescent suicide attempters 9 years after an index suicide attempt (90% females). Five were dead, two by suicide. Thirty-one (42%) of 73 had repeated a suicide attempt. In multiple Cox regression analysis, four factors had an independent predictive effect: comorbid disorders,…

Several sport-specific talent detection models have been developed over the last 30 years (Durand-Bush & Salmela, 2001). However, these models have failed in at least one important standard of judgment--accurately predicting who will develop into an elite level athlete. The authors believe that the WICS model presented by Robert Sternberg also…

The authors present data from 2 feature verification experiments designed to determine whether distinctive features have a privileged status in the computation of word meaning. They use an attractor-based connectionist model of semantic memory to derive predictions for the experiments. Contrary to central predictions of the conceptual structure…

This study examined whether characteristics of behavioral items reported by parent and child are related to parent-child agreement. Data were collected from 20 judges rating 59 child behaviors on 11 dimensions hypothesized to affect parent-child agreement. Data from 675 parent-child dyads (85% female caregivers, 62% male children, aged 7-17)…

This paper considers the problem of analysis of correlation coefficients from a multivariate normal population. A unified theorem is derived for the regression model with normally distributed explanatory variables and the general results are employed to provide useful expressions for the distributions of simple, multiple, and partial-multiple…

The present study investigated vicarious traumatisation among telephone counsellors. In particular, the influence of coping style, supervision, and personal trauma history on vicarious traumatisation was examined. A total of 62 telephone counsellors from trauma related fields completed a series of self-report measures. Generally, levels of…