Respond to at least Two of your colleagues’ posts, in which you critique and/or provide suggestions for additional ways your colleague might try to deal with threats to internal validity while applying a single-group design for his or her program evaluation.
Note: You are not required to respond to a colleague who is on the same evaluation team that you are on.
Be sure to support your postings and responses with specific references to the Learning Resources. Use proper APA format and citations.
