The present guide provides a practical guide to conducting latent profile analysis (LPA) in the Mplus software system. This guide is intended for researchers familiar with some latent variable modeling but not LPA specifically. A general procedure for conducting LPA is provided in six steps: (a) data inspection, (b) iterative evaluation of models, (c) model fit and interpretability, (d) investigation of patterns of profiles in a retained model, (e) covariate analysis, and (f) presentation of results. A worked example is provided with syntax and results to exemplify the steps.

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How doctoral programs train future researchers in quantitative methods has important implications for the quality of scientifically based research in education. The purpose of this article, therefore, is to examine how quantitative methods are used in the literature and taught in doctoral programs. Evidence points to deficiencies in quantitative training and application in several areas: (a) methodological reporting problems, (b) researcher misconceptions and inaccuracies, (c) overreliance on traditional methods, and (d) a lack of coverage of modern advances. An argument is made that a culture supportive of quantitative methods is not consistently available to many applied education researchers. Collective quantitative proficiency is defined as a vision for a culture representative of broader support for quantitative methodology (statistics, measurement, and research design).

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This study reviewed 4,457 articles from 1998 to 2007 in American Counseling Association division‐affiliated journals to identify research articles published in counseling; 1,139 articles (25.6%) were quantitatively research based. The authors provide details related to quantitative research publications, including individual journal contribution to the research base, focus areas for research, and independent and dependent variables highlighted by researchers. One summary finding was that only 6% of counseling research articles explored effectiveness of counseling interventions.