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| META TOPICPARENT |
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Interruption Lab Study |
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- 8 trials in SqP, 10 trials in SC, 3 banks of isomorphic trials, which increase in difficulty;
- difficulty is gauged by number of actions required and complexity of instruction for SC puzzles, gauged by number of lines moved for SqP puzzles;
- ordering of 3 task banks randomly assigned; subsets of trials in which interruptions occur are semi-randomly generated, with the constraint that interruptions are spread across medium and hard trials; no interruptions occur on easy trials (1st trial in each bank);
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- our dependent measures are speed and accuracy scores from the subset of interruption trials for each participant; dependent measures from other trials are not considered in this analysis
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- our dependent measures are speed and accuracy scores from the subset of interruption trials for each participant (4 in SC, 3 in SqP); dependent measures from other trials are not considered in this analysis
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- for both tasks, interruptions occur on the same subset of trials between interruption conditions;
- in SC trial banks, interruptions occur after a fixed onset of time as a function of task difficulty;
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Planned Analyses |
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< | Analysis 1: To determine the local effects of interruption disruption (specific to interrupted trials), we are to conduct a 3 (age, BS) x 3 (interruption demand, WS) mixed-factor ANOVA. |
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> | Analysis 1: To determine the local effects of interruption disruption (specific to interrupted trials), we are to conduct a 3 (age, BS) x 3 (interruption demand, WS) x [3,4] (trial, WS) mixed-factor ANOVA for both SC and SqP. Main effect of trial is not interesting, neither are interactions of trial with age or interruption demand. |
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- local performance measures - only on subset of trials that are interrupted compared with control condition; remainder of uninterrupted trial scores discarded;
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- 12, 9 data points per participant in SC, SqP
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- 3 x 4 = 12 data points per participant in SC, 3 x 3 = 9 data points per participant in SqP
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- DV1: trial completion time;
- DV2: trial accuracy score, based on predefined scoring scheme;
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- ?DV3: task resumption time vs. avg. interaction interval;?
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< | Analysis 2: To determine the global effects of interruption disruption, we are to conduct a 3 (age, BS) x 3 (interruption demand, WS) x 2 (main task, WS) mixed-factor ANOVA. |
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> | Analysis 2: To determine the global effects of interruption disruption, we are to conduct a 3 (age, BS) x 3 (interruption demand, WS) x 2 (main task, WS) mixed-factor ANOVA. Main effect of task is expected, not interesting; interaction effects of task with age, interruption demand are interesting. |
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- global performance measures, collapsed across all trials in a bank of trials
- 6 data points per participant (3 from each task)
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- DV1: total completion time for each bank of trials - normalized to compare total completion time between SC and SqP trial banks;
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- DV1: total completion time for each bank of trials - normalized to compare total completion time between SC and SqP trial banks; (if normally distributed, normalize using z-scores; else, subtract mean from each total completion time)
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- DV2: total accuracy score for each bank of trials, score out of 100%;
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- ?DV3: avg task resumption time vs. avg. interaction interval;?
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Potential covariates, other recorded DVs: |
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