![]() If a person is involved in several conditions, they may become bored, tired, and fed up by the time they come to the second condition or become wise to the requirements of the experiment! Pro: Avoids order effects (such as practice or fatigue) as people participate in one condition only.Con: More people are needed than with the repeated measures design (i.e., more time-consuming).Independent measures involve using two separate groups of participants, one in each condition. ![]() This should be done by random allocation, ensuring that each participant has an equal chance of being assigned to one group. This means that each condition of the experiment includes a different group of participants. Independent measures design, also known as between-groups, is an experimental design where different participants are used in each condition of the independent variable. ![]() Types Three types of experimental designs are commonly used: 1. ![]()
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