Assumptions

Three key assumptions underpin the RCT paradigm.

1. Standardized Intervention Protocols

One key assumption underpinning effectiveness research is that (dose) interventions, both experimental and control can be defined precisely and monitored specifically for adherence.

2. Study Sample Equivalence

The groupings of individuals that receive the interventions are expected to be representative of a broader group of people that might gain from the diffusion of the intervention.

3. Trial Environment Equivalence and Neutrality

The trial environment is expected to be unaffected by factors such as financing, supportive assistance, inter-agency behavior and community dynamics, or, if it is affected, it is assumed that the effect is equivalent between interventions.