Hello everyone,
I am looking at how native speakers (NS) and non-native speakers (NNS) use lexical repetition in argumentative essays.
I would like to compare the mean frequency and density of lexical repetition between the two groups. And also examine whether a participant's use of lexical repetition is affected by/related to an interaction between their group membership and proficiency level.
The data looks like this:
IV: Group
- NSs n = 18
- NNSs n = 18
Each participant wrote an argumentative essay (total 36 essays). For each essay/participant I obtained:
- observations of the same participant in one sitting (not over time)
- are related
Questions:
Many thanks!
Nisreen
I am looking at how native speakers (NS) and non-native speakers (NNS) use lexical repetition in argumentative essays.
I would like to compare the mean frequency and density of lexical repetition between the two groups. And also examine whether a participant's use of lexical repetition is affected by/related to an interaction between their group membership and proficiency level.
The data looks like this:
IV: Group
- NSs n = 18
- NNSs n = 18
Each participant wrote an argumentative essay (total 36 essays). For each essay/participant I obtained:
- Holistic measure of writing proficiency (e.g., Advanced-High, Superior), transformed into a numerical value from 1 (= least proficient) to 5 (most proficient).
- Measures of lexical repetition frequency and density
- DV 1: How many times a participant repeats the same word across sentences, e.g. education/education
- DV 2: How many times a participant repeats a word in different form, e.g. education/educator
- DV 3: Density of same-word repetition (a factor of DV1)
- DV 4: Density of modified word repetition (a factor of DV2)
- DV 5: Ratio of same-word to modified word repetition (a factor of DV1/DV2)
- observations of the same participant in one sitting (not over time)
- are related
Questions:
- Should I do a series of independent samples t-tests since the DVs are related? If yes, is there a way I could examine the effect or interaction of proficiency level?
- Would repeated measures ANOVA be (more) appropriate even when the DVs are related?
- Is the measure of writing proficiency a second DV?
- Neither test is appropriate? Alternatives?
Many thanks!
Nisreen