Programs that improve teaching effectiveness represent a core strategy to improve student educational outcomes and close student achievement gaps. This article compiles empirical values of intraclass correlations for designing effective and efficient experimental studies evaluating the effects of these programs. The Early Childhood Longitudinal…

This case study describes the research carried out in partial fulfilment of the degree of doctor of education. The study was qualitative in nature with a phenomenological interpretive paradigm. My primary objective is to share my experience of combining life story and grounded theory research. My main objectives for undertaking the research were…

The present study describes student learning and personal outcomes associated with learning research methods in introductory psychology, via one of two semester-long projects: one involving performing naturalistic observation of the behavior of community members, and the other involving performing a 60-minute interview of local veterans regarding…

This study investigated the hypothesis that background television affects interactions between parents and very young children. Fifty-one 12-, 24-, and 36-month-old children, each accompanied by 1 parent, were observed for 1 hr of free play in a laboratory space resembling a family room. For half of the hour, an adult-directed television program…

Interactions between conceptual and procedural knowledge influence the development of mathematical competencies. However, after decades of research, these interrelations are still under debate, and empirical results are inconclusive. The authors point out a source of these problems. Different kinds of knowledge and competencies only show up…

The recognition of second language (L2) development as a dynamic process has led to different claims about how language development unfolds, what represents a learner's linguistic system (i.e., interlanguage) at a certain point in time, and how that system changes over time (Verspoor, de Bot, & Lowie, 2011). Responding to de Bot and…

This study draws on the application of sociocultural theory to second-language learning and teaching to examine the impact of a design-based research approach on teacher development and literacy instruction to English-language learners (ELLs). Design-based research methodology was employed to derive theoretical suppositions relating to the process…

Author responds to critique by Daniel Griffiths (Educational Administration Quarterly v. 19, p. 201-21) by defending his work in three areas: derivation of hypotheses, testing of hypotheses, and erroneous attribution of assumptions. (JW)

The hypothetical deduction model of educational research should be replaced by one that distinguishes between the logical structure of hypothetico-deduction and its methodological application. Such a framework explores relationships between three levels of explanation: observation sentences, observation categoricals, and theory formulations. (SK)

A series of studies on observer biases revealed that simply informing observers of experimental hypotheses does not produce observational data consonant with those hypotheses. However, questionnaire responses following an experiment with different induced expectations does produce global data consonant with experimental hypotheses. In addition, if…

This study was designed to test the following hypothesis: no significant differences will exist in the responses to a questionnaire by student teachers and supervising teachers assigned to two different programs of student teaching--one large group and two small groups. The control program was the normal program of supervision that is typically…