solved I’m working on a psychology writing question and need an

I’m working on a psychology writing question and need an explanation and answer to help me learn.

These questions to use the variables, hypothesis, just as a little research question: Using a one-group pretest-postest design, propose a study that assesses whether a brief hand-washing education intervention increases the likelihood that individuals will wash their hands after using the restroom, touching raw meat, etc. Please do the following:Identify your variablesExplain your study design and how you will measure change.Discuss 2-3 issues you might run into when using this design and how you would handle them. __________________Using a posttest only nonequivalent groups design, propose a study that assesses whether a new psychotherapy treatment for OCD is more effective than what is currently being used. Please do the following in your answer:Identify your variables Explain your studyDiscuss what you will do to ensure groups are as similar as possible