Statistical methods for sequential meta-analysis have applications also for the design of new trials. Existing methods are based on group sequential methods developed for single trials and start with the calculation of a required information size. This works satisfactorily within the framework of fixed effects meta-analysis, but conceptual…

This chapter presents Hutchinson's Metamethodology, which is a methodology for building methodologies. The methodology is composed of a set of rules and procedures that, when followed and applied to any problem area, will result in a systematic set of procedures for dealing with that problem area. The following major processes of the methodology…

In the past, psychotherapy process research has operated in a vacuum, cut off from clinical practice. It has been dominated by short-sighted, simplistic methodological short-cuts which have hampered its usefulness. Over the next decade new research approaches may substantially close the gap between psychotherapy process research and the practice…

A review of 20 research studies on the use of constant time delay in teaching chained tasks is analyzed in regard to demographic variables (participants, settings), procedural variables (probe format, delay sessions), outcome measures (effectiveness, generalization), and methodological adequacy (dependent and independent variable reliability). (DB)