You use a repeated-measures design to study the effect of different coaching strategies on the number of basketball free throws participants make. You find that the more attempts the participants make, the better they get, which is an example of ______.
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Correct Answer:
A practice effect
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What differentiates a dependent-groups design from an independent-groups design?
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There is a relationship between people in different conditions or they are the same people.
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The standard error of the mean difference is ______.
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The standard deviation of the differences for a sampling distribution of mean differences
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When analyzing a dependent design with three or more groups, which is the appropriate analysis?
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All of these
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Which of the following is not an assumption of the dependent-samples t test?
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The IV has three or more groups.
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Of the following what would be the most appropriate matching variable for a study on the effect of encouragement on math test performance?
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GPA
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If you wanted to do a repeated-measures design looking at the effect of watching different types of movies (comedies and dramas) on mood, how many types of movies would each participant view?
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Correct Answer:
2
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Bill randomly assigns each participant in his study to one of the possible sequences of conditions without concern about order or sequence. He’s using ______.
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The numerator of the variance created by adding the squared differences in the scores of individual participants across different conditions in a dependent design is known as ______.
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The sums of squares of subjects
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If the assumption of sphericity is violated, you should use ______ to test your hypothesis.
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Greenhouse–Geisser
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Within subjects anova is the statistical test used to analyze dependent ____ groups designs.
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Correct Answer:
Multiple
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Sum of squares of subjects is the numerator of the variance created by adding the squared differences in the scores of individual participants across different condi-tions in a dependent design.
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Correct Answer:
True
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Standard deviation of the differences for a sampling dis-tribution of mean differences; estimated from the standard deviation of difference scores in a dependent-samples study is standard error of mean differences
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Correct Answer:
True
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In a ____ design, sphericity is the assumption that the variances of the differences between all the combina-tions of pairs of groups are equal.
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Correct Answer:
Dependent
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Repeated measures design is a design where participants experience every condition in a study; in an experiment they also are ran-domly assigned to the order of conditions.
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Correct Answer:
True
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Randomized partial counterbalancing is randomly assigning each participant to one of the possible sequences of conditions without concern about order or sequence
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True
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A confound that occurs when partici-pants’ scores change due to repeating a task rather than because of the level of the IV is called
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Correct Answer:
Practice effect
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The effect size for a _____ multiple-group design that removes the variability unique to individual participants from the error term Is called partial eta squared
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Correct Answer:
Dependent
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Randomly assigning partic-ipants to different sequences of conditions so that each condition is represented in each order an equal number of times but not all sequences are represented is partial counterbalancing
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Correct Answer:
True
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A confound that occurs when the order of each treatment condition cannot be separated from the condition is called
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Order effect
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____ difference is the average difference between the scores of matched pairs or the scores for the same par-ticipants across two conditions
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Correct Answer:
Mean
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Match pair design is where participants in each group are matched on a characteristic relevant to the variable that is being measured; in an experimental design a member of each matched pair is randomly assigned to each IV condition.
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True
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____ square balancing is a type of partial counterbalancing where each condition appears once in each sequence; participants are then randomly assigned to the different sequences.
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Latin
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Interaction sum of squares is the numerator of the variance created by the differences among differ-ent participants in the same condition in a dependent design; considered an interaction between condition and participants.
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Correct Answer:
True
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A confound that occurs when changes in the DV occur because of participants becoming tired is called
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Fatigue effect
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The statistical test used to analyze results from a dependent ___ groups design is called dependent sample t test
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Correct Answer:
Two
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Dependent group design is where the partic-ipants in different conditions are related or are the same people; the design reduces error variance and is more pow-erful than an independent design.
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Correct Answer:
True
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Counterbalancing is procedure to eliminate order effects in a repeated measures experiment
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Correct Answer:
True
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Complete Counterbalancing is randomly assigning par-ticipants to all the possible sequences of conditions in an experiment.
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Correct Answer:
True
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A confound that occurs when the effect of one condition of the treatment continues (or carries over) into the next condition is called
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Correct Answer:
Carryover effect
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