University of Phoenix Material Research Analysis Terms Definitions Peer-reviewed study Peer review refers to a study that has been accepted by a standard journal using blind review by peers in the field. This means that every study should have a fair access to publication based upon quality of the study. Type of study Types of studies can include experimental, case study, longitudinal, cross-sectional, survey, and so forth. Measurement or assessment tools A measurement tool is a means that the researchers used to measure or assess the variables under study. Did the study develop assessment tools? Did the study use objective measurement tools? Can the measurement tools be found and used by another researcher? Are the instruments valid and reliable? Number of participants This refers to how many participants were in the study. How they were selected Selection process can include the means of recruitment of participants; what was the sampling method or strategy? Describe the population. This could be clients or college students. Indicate sample size. Number of groups Was there a control group? The control group does not receive the treatment. Do these participants have the same characteristics and diagnosis as the experimental group participants? How they were assigned Were they matched or randomly assigned to one the conditions, or groups, in the study? What type of intervention was delivered Define the type of therapeutic treatment or intervention that occurred. How the intervention was delivered Were there therapists? Were the therapists trained to deliver the treatment? Was the study a drug study? Was it double-blind? Were there repeated measures In this area, we are looking at whether the study found the subjects 6 months or 1 year after the conclusion of the study. Was there a difference between the experimental and control participants at the follow up? We are looking at whether the treatment effect lasts over time.