Use a lead-in to introduce the list items and to indicate the meaning or purpose of the list (and punctuate it with a colon). When two items are alternatives, use a bulleted list (with or between). Do not use numbered lists for ORed items. For three or more alternatives, indicate that in the list lead-in. When a separate notice or explanatory paragraph follows a item, indent that separate material to the text of the parent list item. Indented material that elaborates on the parent list item.
double-blind procedure-an experimental procedure in which neither the subjects of the experiment nor the persons administering the experiment know the critical aspects of the experiment; a double-blind procedure is used to guard against both experimenter bias and placebo effects.ouble-blind procedure-an experimental procedure in which neither the subjects of the experiment nor the persons administering the experiment know the critical aspects of the experiment; a double-blind procedure is used to guard against both experimenter bias and placebo effects.
A Closer Look at Double-Blind Studies. Letâs take a closer look at what we mean by a double-blind study and how this type of procedure works. As mentioned previously, double-blind indicates that the participants and the experimenters are unaware of who is receiving the real treatment.