Journal
FRONTIERS IN PSYCHOLOGY
Volume 12, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fpsyg.2021.628660
Keywords
computer-based assessment; keystroke log data; cognitive; writing; finite mixture model (FMM)
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Funding
- Shanghai Jiao Tong University [AF3500015]
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In this study, keystroke log data was used to quantify students' writing process and the estimated parameters were found to be meaningful and interpretable across cognitive processes. The mixture model captured details of the writing process and revealed differences between students with different scores.
In a computer-based writing assessment, massive keystroke log data can provide real-time information on students' writing behaviors during text production. This research aims to quantify the writing process from a cognitive standpoint. The hope is that the quantification may contribute to establish a writing profile for each student to represent a student's learning status. Such profiles may contain richer information to influence the ongoing and future writing instruction. Educational Testing Service (ETS) administered the assessment and collected a large sample of student essays. The sample used in this study contains nearly 1,000 essays collected across 24 schools in 18 U.S. states. Using a mixture of lognormal models, the main findings show that the estimated parameters on pause data are meaningful and interpretable with low-to-high cognitive processes. These findings are also consistent across two writing genres. Moreover, the mixture model captures aspects of the writing process not examined otherwise: (1) for some students, the model comparison criterion favored the three-component model, whereas for other students, the criterion favored the four-component model; and (2) students with low human scores have a wide range of values on the mixing proportion parameter, whereas students with higher scores do not possess this pattern.
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