Proficiency level and input delivery method (FFI vs. no-FFI) interact significantly in their effect on grammatical knowledge¶

Claim · All claims
Evidence · 1 study · causal r2 · q3 · i2 medium
Currency · newest study 2016 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i2 The interaction of proficiency level and input delivery method had a significant impact on learners' grammatical knowledge. → Rooholamin et al. 2016

Evidence¶

Rooholamin et al. 2016¶

Amir Rooholamin, Reza Biria & Hamid Reza Haghverdi. (2016). Effectiveness of Proactive Intensive FFI in Cultivating Grammatical Knowledge of Iranian EFL Learners at Different Proficiency Levels. English Language Teaching, 9(3). https://doi.org/10.5539/elt.v9n3p197

q3 · i2 · causal · r2

Two-way ANOVA interaction term (PL*Groups) on posttest grammar scores of 110 learners: significant at p = .009, partial η² = .063. The article states almost none of the prior studies it knows addressed this interaction effect.

"the p value in front of PL*Groups, was less than the alpha level (.009 < .05), which means that the interaction of the two independent variables of proficiency level and input delivery method (i.e. with or without FFI) had a significant impact on the learners’ grammatical knowledge."

Discussion¶

Related Claims¶

• EFL learners receiving proactive intensive FFI significantly outperform no-FFI control learners on grammatical knowledge — related
• Proactive intensive FFI benefits intermediate EFL learners' grammatical knowledge more than advanced learners' — a narrower finding that bears on this claim
• Input-based FFI was more effective than output-based FFI at both beginner and intermediate proficiency levels, and both types showed larger effects for intermediate learners — related
• Input-based FFI is only slightly more effective than output-based FFI for intra-phrasal grammatical features in Persian EFL learners — related
• Output-based FFI was more effective than input-based FFI for complex clausal grammatical features, a difference the article characterizes as a large effect — related
• Grammatical complexity and L2 proficiency interact: complex features benefit more from input at low proficiency, while simple features benefit more from output at high proficiency — related
• L1 transfer may moderate FFI effectiveness: features similar to Persian benefit more from input, while disparate features benefit more from output — related
• Proactive intensive FFI significantly improves the grammatical knowledge of both intermediate and advanced Iranian EFL learners — related