Two participants did not complete the PPVT-R and thus were excluded from the analysis.
T tests did not show any difference in standard PPVT-R scores between the high- and low-engagement-of-reflection groups, t < 1, but indicated that the group with a high level of need for reflection had significantly lower standard PPVT-R scores than the group with a low level of need for reflection, r(107) = 2.
Because the McCarthy GCI, PPVT-R Standard Score, and PLAI Total Appropriate score measure conceptually distinct abilities, we investigated each of them as aptitude measures.
1995), the PPVT-R was the best predictor, followed by the McCarthy GCI.
Similar to the results for children's intelligence, regression analyses revealed that maternal Performance IQ was a more important predictor of PPVT-R scores than was maternal Verbal IQ.
After controlling for maternal predictors and their interactions with gender, boys scored higher on the PPVT-R, had more behavior problems, but had somewhat easier temperaments.
The PPVT-R (Dunn & Dunn, 1981) is a standardized test that has been used in numerous vocabulary acquisition studies to assess students' general receptive vocabulary (e.
For logistical reasons, we were unable to administer the PPVT-R individually to each student.
tests receptive vocabulary skills in individuals ranging in age from 2 years 6 months to 40 years.
We selected the McCarthy GCI as a general cognitive aptitude measure, and the PPVT-R
as a general language aptitude measure.
The predictors of warmth and positive verbal exchanges were significant when predicting 30-month Stanford Binet and 44-month PPVT-R
scores, even after demographic risk index factors (conditions of low income, low education, minority status, and absence of male partner) were taken into account (Hann, Osofsky, & Culp, 1996).
To determine the degree to which random assignment was successful in forming comparable groups, one-way analyses of variance (ANOVAs) were performed on the McCarthy GCI, PPVT-R
, TELD, and TERA pretests.