continuum results for:
INTERNAL VALIDITY
this
quasi-experimental design

Quasi-experiments are also considered to have high internal validity, although less so than true experiments. Quasi experiments are based on sound theory and typically have comparison groups (but no random assignment of participants to condition) and/or multiple measurement points (e.g., pre-post measures, longitudinal design).

RELATED RESOURCESRELATED RESOURCES:

Internal Validity is only one of six dimensions that are described on the continuum of the best available research evidence. Ideally, strategies will demonstrate strong evidence across as many of these dimensions as possible.

Remember that a well-informed evidence-based decision will need to include contextual and experiential evidence as described in detail in the corresponding Lesson Modules.

To learn more about how to strengthen the research evidence related to a specific strategy, the following resources may be helpful.

RESOURCE LINKS
  • Community-Campus Partnerships for Health
    ccph.info External Link
  • The Community Toolbox
    http://ctb.ku.edu/en/dothework/tools_tk_12.aspx External Link
  • CDC’s Framework for Program Evaluation
    http://www.cdc.gov/eval/framework/index.htm External Link
  • The American Evaluation Association
    http://www.eval.org/p/cm/ld/fid=108 External Link
  • Innovation Network
    http://www.innonet.org/index.php?section_id=4&contentid=16 External Link