Crisp Vs. Chewy Cookies

MARCELLA QUESTIONFeedback: sometimes i like my cookies crisp-other times chewy.does substituting oil for shortening(or butter )make a difference or are there other factors?Thanks for any help. ROSE REPLY you are right--there are many factors involved so the best thing is to make the type of cookie that is intended to be crisp or the type that is intended to be softer and chewy and store these cookies separately from eachother so they stay that way!