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.
Introduction. Double vision (medically known as diplopia) is seeing two images of a single object. The two images may be one on top of the other, side by side, or a mix of both.Double vision may be constant, it may come and go, or it may only occur when you're looking in a particular direction.f your eye muscles or nerves are damaged, the muscles may not be able to control your eyes properly and you may develop double vision. Your eye muscles can also be weakened as a result of a health condition, or your eyes may not be aligned properly.