Differences in iq and Memory of Monolingual/Bilingual Children who Suffered a tbi

participants were age matched for comparison between monolingual and bilingual 
groups. A total of 20 bilingual patients qualified to be a part of this study. Of the 20, only 
nine consented to answer the language fluency questionnaire. Of the 11 who did not 
participate, six did not return phone calls after three messages were left, three had parents 
who were bilingual but children who were monolingual, and two telephone numbers had 
been disconnected. 
 
Table 1. 
Demographic Characteristics of Participants 
 Demographic 
Characteristics 
Percentage (Raw #) 
Mean (SD) 
Bilinguals
 
 
Gender 
 
 
Female 
44.4 (4) 
Male 
55.6 (5) 
 
 
Age 
 
11.67 (3.74) 
 
Parent Reporter 
 
 
 
Mothers 
89 (8) 
 
 
Fathers 
11 (1) 
 
Monolinguals
 
 
 
Gender 
 
 
 
Female 
33.3 (3) 
 
 
Male 
66.7 (6) 
 
 
Age 
 
11.67 (3.61) 

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A power analysis was conducted a priori, using G power 3 (Faul, Erdfelder, & 
Buchner, 2007), which showed that in order to obtain an effect size of 0.20 and power of 
0.80 the experiment would need 16 participants (eight participants in each group) if a 
mixed model ANOVA is to be conducted.
This study is a quasi-experimental correlational design that aims to determine if 
there are significant differences in IQ and memory between a bilingual child who has 
incurred a TBI and a monolingual child who has incurred a TBI. This study also aims to 
determine if there are significant differences in the VIQ and PIQ and/or verbal and 
nonverbal memory in bilingual children who have experienced a TBI. All ANOVA’s 
were conducted using age when TBI was obtained as a covariate. This variable was used 
as a covariate as previous research has shown that it can account for substantial variance 
in this subpopulation (Babikian & Asarnow, 2009).