The impact of mobile language-learning apps on vocabulary retention among adult ESL learners.

The impact of mobile language-learning apps on vocabulary retention among adult ESL learners.

Nguyễn Ngọc Quỳnh Như HUF04
Q1,2: Very clear. They focus on measurable data (time and test scores).
Q3: Mostly clear, but "memorizing" can be subjective. You might want to focus on "perceived ...

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Q1,2: Very clear. They focus on measurable data (time and test scores).
Q3: Mostly clear, but "memorizing" can be subjective. You might want to focus on "perceived effectiveness" or "engagement."