Adjusted posttest VST means were ordered by time spent using the word card program, with the two-hour group highest¶

Claim · All claims
Evidence · 1 study · causal r2 · q2
Currency · newest study 2013 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? Adjusted posttest means rose with word-card program time: control M = 2719.00, vocabulary and ER M = 3680.00, vocabulary M = 4092.00. → McLean 2013

Evidence¶

McLean 2013¶

McLean, S., Hogg, N., & Rush, T. W. (2013). Vocabulary learning through an online computerized flashcard site. The JALT CALL Journal, 9(1), 79-98. https://eric.ed.gov/?id=EJ1108008

q2 · i? · causal · r2

ANCOVA adjusted posttest means from the same 12-class quasi-experiment, reported in Table 5 with 95% confidence intervals. The article reports the means were "in the order of the time spent using the word card program"; no standardized effect size is printed for this ordering.

"The means of the posttest VST score adjusted for initial differences were in the order of the time spent using the word card program (Table 5). The control group had the smallest adjusted mean (M = 2719.00), vocabulary and ER group had a larger adjusted mean (M = 3680.00), and the vocabulary group had the largest adjusted mean (M = 4092.00)."

Discussion¶

Related Claims¶

• Classes assigned weekly Word Engine online flashcard use gained significantly more on the VST than an extensive-reading control class over one academic year, in a quasi-experiment with acknowledged selection and time-on-task confounds — a broader claim this one bears on
• Raw VST gain scores did not support that two hours of weekly Word Engine use produced greater gains than one hour — reports the opposite
• Number of correctly retrieved and acquired Word Engine items each correlated moderately with VST score gains — related
• Longer time spent in the Parole software correlates with more words learned and retained — related