Mercedes Spencer|Andrea E. Muse|Richard K. Wagner|Barbara R. Foorman|Yaacov Petscher|Christopher Schatschneider|Elizabeth L. Tighe|Morris Bishop
Examining the underlying dimensions of morphological awareness and vocabulary knowledge
Florida State University|Florida State University|Florida State University|Florida State University|Florida State University|Florida State University|Florida State University|Florida State University
report results two studies underlying dimensions morphological awareness vocabulary knowledge elementaryaged children study 1 99 fourthgrade students given multiple measures morphological awareness vocabulary single factor accounted individual differences morphology vocabulary assessments study 2 extended results giving 90 eighthgrade students expanded measures vocabulary morphology assessed definitional knowledge b usage c relational knowledge knowledge morphological variants potential aspect knowledge assessed using identical set 23 words control differential knowledge specific vocabulary items results indicated singlefactor model encompassed morphological vocabulary knowledge provided best fit data finally explanatory item response modeling used investigate sources variance vocabulary morphological awareness tasks administered implications assessment instruction discussed