interobserver reliability
the accuracy of data collected across observers
permenent products
materials that are produced as a result of behavior (ex: work sheets, tests, art)
baseline data
measurement of target behavior prior to implementation of the intervention
baseline condition
referred to as condition A in a single subject design; behavior before intervention is implemented
single-subject design
experimental design used with small number of subjects to demonstrate experimental control and intervention effects
multiple-baseline design
a variation on the A-B design in which the intervention is assessed across subjects, behaviors, or settings
changing-criterion design
used to increase or decrease the performance of a single behavior by gradually increasing the criteion for reinforcement across several intervals of time
alternating-treatments design
an experimental design to assess the relative effectiveness of 2 or more treatment conditions (ex: a-b-a-c)
quasi-experimental design
experimental design with poor internal and external validity, making it difficult to demonstrate a strong relationship between the intervention and the outcomes (ex: A-B designs)
intervention condition
condition B of a single-subject design, when an intervention is being implemented