When individuals participate in only one condition it is a single group design. When individuals participate in all conditions it is a full measure design. Thus the correct option is (A).
Single Group Design refers to the design in which the one or the two level are studied or the single group is analysed.
For example in the Research project, a study in which there is only one group of participants, each of whom receives a single intervention, and where the results are tracked over time.
A full measure design occurs when participants take part in every circumstance. Therefore the correct option is (A).
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