Hello Everyone,
I conducted a study creating a pre-post one-group design (Pre-experimental) and stated only directional hypothesis (Alternative one). I received the comment from a reviewer as follows:
"Why did you prefer alternative hypothesis over the null hypothesis?"
I chose this unidirectional hypothesis because my Literature Reviews showed positive results in previous studies.
One statististician says it is okay. However, one expert says "Even if the review suggests a positive relation, we should work on the Null hypothesis".
I also ready a few research with only H1 for the same reason stated above.
Could there be any other explanations?
Please help me respond it with references.
Regards,
Saleem
The classic null hypothesis is no relationship where you want to determine whether your results allow you to reject the null. Typically, you only propose a directional hypothesis as the null when you actually expect to find something different (ie.e., no relationship or a relationship in the opposite direction).
