The development of the Causal Ordering Model of Academic Self- concept, Nonacademic Self-concept and English Reading Achievement of Mathayomsueksa 3 students Surin Province.

Abstract

The purposes of this study were to develop and examine the validity of the hypothesised
of the causal ordering model of academic self- concept, nonacademic self-concept and English
reading achievement Mathayomsuksa 3 (grade 9) students Surin province. and to test the model
and parameter invariant between students in schools of different sizes. The sample consisted of
1,020 Matthayomsueksa 3 students from 12 school in Surin province in the first semester of the
academic year 2012, obtained using the multi-stage random sampling technique. The instruments
used in the study were English reading achievement test with difficulties ranging from 0.22 to 0.79,
discriminating powers ranging from 0.22 to 0.86 and reliability of 0.89 and questionnaire of
academic self- concept with discriminating powers ranging from 0.40 to 0.69 and reliability of 0.93
and nonacademic self-concept with discriminating powers ranging from 0.41 to 0.63 and reliability
of 0.87. The data were repeatedly collected for 3 times, each time was approximately 1 month
after each collection. The collected data were analyzed using descriptive statistics ; Percentage,
X , S. Analyzed using structural equation modeling (SEM) ; Multiple group, Mplus 6.12 Program.
The results of the study were as follows ;
1. The causal ordering model of academic self- concept, nonacademic self-concept
and English reading achievement of Mathayomsueksa 3 students Surin Province was good fit with
the empirical data  2 = 285.142, df = 250,  2 / df = 1.140, p-value = 0.062, CFI = 0.998, TLI =
0.997, RMSEA = 0.012 , SRMR = 0.026. During measure 3 times, influenced the first has the most
influence can be described academic self-concept (ASC2) 41.00 percent, nonacademic selfconcept (NSC2) was 42.00 percent and English reading achievement (ERA2) was 65.00 percent.
2. The causal ordering model of academic self- concept, nonacademic self-concept
and English reading achievement of Mathayomsueksa 3, students Surin Province. By considering
2
x = 1299, df = 663, x 2 / df = 1.960, p-value = 0.000, CFI = 0.956, TLI = 0.945, RMSEA = 0.053 and
SRMR = 0.074 were default in testing invariance of parameters to 4 assumption that were invariant
in form model but different parameter, influenced the first had the most influential all three sizes
school.