50 research outputs found
Parenting Self-Efficacy and Parenting Practices over Time in Mexican American Families
Drawing on social cognitive theory, this study used a longitudinal cross-lagged panel design and a structural equation modeling approach to evaluate parenting self-efficacy\u27s reciprocal and causal associations with parents\u27 positive control practices over time to predict adolescents\u27 conduct problems. Data were obtained from teachers, mothers, and adolescents in 189 Mexican American families living in the southwest U.S. After accounting for contemporaneous reciprocal relationships between parenting self-efficacy (PSE) and positive control, results indicated that parenting self-efficacy predicted future positive control practices rather than the reverse. PSE also showed direct effects on decreased adolescent conduct problems. PSE functioned in an antecedent causal role in relation to parents\u27 positive control practices and adolescents\u27 conduct problems in this sample. These results support the cross-cultural applicability of social cognitive theory to parenting in Mexican American families. An implication is that parenting interventions aimed at preventing adolescent conduct problems need to focus on elevating the PSE of Mexican American parents with low levels of PSE. In addition, future research should seek to specify the most effective strategies for enhancing PSE
Applied Tests of Design Skills — Part 1: Divergent Thinking
A number of cognitive skills relevant to conceptual design were identified previously. They include divergent thinking (DT), visual thinking (VT), spatial reasoning (SR), qualitative reasoning (QR), and problem formulation (PF). A battery of standardized tests is being developed for these design skills. This paper focuses only on the divergent thinking test. This particular test has been given to over 500 engineering students and a smaller number of practicing engineers. It is designed to evaluate four direct measures (fluency, flexibility, originality, and quality) and four indirect measures (abstractability, afixability, detailability, and decomplexability). The eight questions on the test overlap in some measures and the responses can be used to evaluate several measures independently (e.g., fluency and originality can be evaluated separately from the same idea set). The data on the twenty-three measured variables were factor analyzed using both exploratory and confirmatory procedures. A four-factor solution with correlated (oblique) factors was deemed the best available solution after examining solutions with more factors. The indirect measures did not appear to correlate strongly either among themselves or with the other direct measures. The four-factor structure was then taken into a confirmatory factor analytic procedure that adjusted for the missing data. It was found to provide a reasonable fit. Estimated correlations among the four factors (F) ranged from a high of 0.32 for F1 and F2 to a low of 0.06 for F3 and F4. All factor loadings were statistically significant
Tolerance intervals: Alternatives to credibility intervals in validity generalization research
In validity generalization research, the estimated
mean and variance of the true validity distribution are
often used to construct a credibility interval, an interval
containing a specified proportion of the true validity
distribution. The statistical interpretation of this interval
in the literature has varied between Bayesian
and classical (frequentist) viewpoints. Credibility intervals
are here discussed from the frequentist perspective.
These are known as "tolerance intervals" in the
statistical literature. Two new methods for constructing
a credibility interval are presented. Unlike the current
method of constructing the credibility interval,
tolerance intervals have known performance characteristics
across repeated applications, justifying confidence
statements. The new methods may be useful in
validity generalization research involving a small or
moderate number of validation studies. Index
terms: Bayesian statistics, Credibility intervals, Metaanalysis,
Tolerance intervals, True validity distribution, Validity generalization
On the misuse of manifest variables in the detection of measurement bias.
Measurement invariance (lack of bias) of a manifest variable Y with respect to a latent variable W is defined as invariance of the conditional distribution of Y given W over selected subpopulations. Invariance is commonly assessed by studying subpopulation differences in the conditional distribution of Y given a manifest variable Z, chosen to substitute for W. A unified treatment of conditions that may allow the detection of measurement bias using statistical procedures involving only observed or manifest variables is presented. Theorems are provided that give conditions for measurement invariance, and for invariance of the conditional distribution of Y given Z. Additional theorems and examples explore the Bayes sufficiency of Z, stochastic ordering in W, local independence of Y and Z, exponential families, and the reliability of Z. It is shown that when Bayes sufficiency of Z fails, the two forms of invariance will often not be equivalent in practice. Bayes sufficiency holds under Rasch model assumptions, and in long tests under certain conditions. It is concluded that bias detection procedures that rely strictly on observed variables are not in general diagnostic of measurement bias, or the lack of bias
Factors influencing the Mantel-Haenszel procedure in the detection of differential item functioning
The performance of the Mantel-Haenszel odds-ratio
estimator and X² significance test were investigated
using simulated data. Multiparameter logistic
item response theory models were used to
generate item scores for 20- and 40-item tests for
500 reference group and 500 focal group examinees.
The difficulty, discrimination, and guessing
parameters, and the difference in the group trait
level averages were varied and combined factorially.
Within each cell of the design, 200 replications
were completed under both differential item functioning
(DIF) and no-DiF conditions. The empirical
X² Type I and Type II error rates, and the average
of the odds-ratio estimates, were analyzed over the
200 replications. Under no-DiF conditions, inflated
X² Type I error rates and misestimated odds-ratio
values were found for the 20-item test and resulted
from interactions between item parameter values
and trait differences. For the 40-item test, Type I
error rate inflation disappeared but odds-ratios
still were misestimated. Under DIF conditions,
Type II error rates were not inflated, but odds-ratios
were misestimated, due to parameter X trait
level interactions for both test lengths. The results
demonstrate the importance of using both the odds-ratio
and the significance test in interpreting the
presence or absence of DIF. In addition, the
accuracy under the DIF conditions depended on the
size and uniformity Of DIF. Index terms: differential
item functioning, item bias, item response theory,
Mantel-Haenszel procedure, measurement bias, odds-ratio,
simulation.Uttaro, Thomas; Millsap, Roger E.. (1994). Factors influencing the Mantel-Haenszel procedure in the detection of differential item functioning. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/116937