In science in general and in the context of single-case experimental designs, replication of the effects of the intervention within and/or across participants or experiments is crucial for establishing causality and for assessing the generality of the intervention effect. Specific developments and proposals for assessing whether an effect has been…

We reviewed all research articles in 10 recent volumes of the "Journal of Applied Behavior Analysis (JABA)": Vol. 28(3), 1995, through Vol. 38(2), 2005. Continuous recording was used in the majority (55%) of the 168 articles reporting data on free-operant human behaviors. Three methods for reporting interobserver agreement (exact agreement,…

The authors suggest that line graphs that average response frequency over long periods obscure the major rate changes that indicate sources of behavioral control. A scatter plot can make patterns of responding identifiable and, in turn, suggest environmental features that occasion undesirable behavior. Use of scatter diagrams is illustrated in…

Procedures are proposed for increasing the accuracy of generalization assessment in applied behavior analysis with behavior problem populations by accounting for the degree of natural covariation between treated and untreated behaviors. (Author/DB)

This commentary outlines considerations in assessing (and programing for) social validity to attain results that are valued by client audiences. It discusses the objectives and contexts of several types of social validation, procedures for conducting a social validation, and questions addressed by researchers in assessing social validity. (JDD)

This article demonstrates the impact of functional analysis methodology on clinical work, by describing the evolution of assessment procedures based on "brief functional analysis" methodology at University of Iowa outpatient clinics. It discusses the positive impact functional analysis has had on outpatient clinic assessment as well as…

This commentary summarizes methodological and conceptual issues in functional analysis methodologies and offers some suggestions for their resolution. Considered are increasing complexity, absence of contingencies during assessment, use of subtle manipulations, alternative assessment strategies, analysis of antecedent influences on behavior,…

Data are summarized from 152 single-subject analyses of the reinforcing functions of self-injurious behavior (SIB) in individuals with developmental disabilities. Overall results indicated that functional analysis methodologies are extremely effective in identifying the environmental determinants of SIB on an individual basis and, subsequently, in…

An approach based on Skinner's (1957) theory of verbal behavior has been developed to understand and teach elementary communication skills to children with autism and developmental disabilities (Sundberg & Partington, 1998). However, few studies have directly examined the characteristics of emerging language in children with developmental…

A functional analysis of distinct topographies of aberrant behavior displayed by 4 individuals (ages 6-28) with moderate to profound mental retardation indicated that hypotheses of separate functions for distinct behaviors can be generated using both extended and brief functional analyses when results are graphed in the aggregate and separated by…

This commentary affirms that the methodology proposed in a paper by Richard A. Winett and others (EC 601 539) may be useful in conducting social validity assessments and applying these assessment data to improve behavioral interventions. The study of accurate and valid assessment of consumer satisfaction is encouraged. (JDD)

This commentary on assessing the social validity of behavior-change programs examines which groups should be included in the assessment, whether social validity assessment should be required, and whether new methods are needed. The paper notes that social validation should be an interactive process between researcher and consumer. (JDD)

The representativeness of behavioral observation samples with durations of less than the whole time of interest was investigated with five profoundly mentally retarded physically handicapped adults in an institutional setting. It was found that the session representativeness was a function of the relative duration of the behavioral categories and…

This article challenges applied behavior analysts to use their knowledge of consumer behavior and effective educational strategies to provide consumers with useful information, thereby enabling them to make informed decisions. This will decrease the misconceptions that many consumers have about behavior analysis, thus improving the social validity…

Five criteria are proposed for evaluating performance in research studies: the directness of sampling, the responsiveness of the target, the reliability of the observers, the frequent assessment of the target during the intervention period, and the critical nature of the target. A case study illustrates effectiveness of the criteria. (Author/CR)