Final answer:
The dimension of ABA as outlined by Baer, Wolf & Risley (1968) is Empirical. Empirical is a scientific approach grounded in objective, tangible evidence that can be observed and measured. It is crucial in developing and evaluating interventions in ABA.
Step-by-step explanation:
The dimension of ABA as outlined by Baer, Wolf & Risley (1968) is Empirical.
Empirical refers to a scientific approach that is grounded in objective, tangible evidence that can be observed and measured. It emphasizes the use of systematic observation and data collection in order to make evidence-based conclusions and decisions. In the context of applied behavior analysis (ABA), empirical evidence is crucial for developing and evaluating interventions to improve behavior.