y .20, p = .20 to .80) Next, the second test, consisting of seventy selected items, was administered to another one hundred students. From this administration further item analysis and reliability, standard deviation, standard error of measurement, and mean scores of each section of the test were calculated. Results The achievement test of the English course 041 "Listening- Speaking Skills 1" which was derived from this study was separated into three sections and consisted of fifty items,, Item discrimination power indices range from .22 to .72 while indices of item difficulty range from .22 to .72, The internal consistency reliability of each section of the test is .66, .73 and .73 respectively. The standard deviation of each section of the test is 3.53, 3.94 and 5.99 respectively. The standard, error of measurement of each section of the test is 2.06, 2.05 and 3.11 respectively. The mean scores of each section of the test is 11.13, 9.19 and 14.653 and the present validity of the test can be classified only as content validity."/>
Abstract:
Purpose The purpose of this study was to construct an' effective achievement test for the English course Ola "Listening-Speaking Skills 1" for the Matayom Suksa Three students who study it as an elective. Procedure The test items constructed were based on the objectives of the English course Ola "Listening-Speaking Book I" and on the content areas in the book "Keep Talking Book I" and its accompanying tapes. The test was separated into three sections : section one consisted of thirty multiple choice items, each with four choices; section two consisted of forty-nine multiple choice questions testing listening comprehension, each with four choices; and section three consisted of twenty simultaneous listening-speaking situations, making a total of ninety-nine test items. In developing the test items, two trial-tests were administered. Section one and two of the first test were administered to one hundred students, and the third section was administered to thirty students picked randomly from the same group of one hundred students. An item analysis was then performed; Indices of item discrimination power and item difficulty were derived from this trial test and were developed to reach the maximum scales of standard levels (r > y .20, p = .20 to .80) Next, the second test, consisting of seventy selected items, was administered to another one hundred students. From this administration further item analysis and reliability, standard deviation, standard error of measurement, and mean scores of each section of the test were calculated. Results The achievement test of the English course 041 "Listening- Speaking Skills 1" which was derived from this study was separated into three sections and consisted of fifty items,, Item discrimination power indices range from .22 to .72 while indices of item difficulty range from .22 to .72, The internal consistency reliability of each section of the test is .66, .73 and .73 respectively. The standard deviation of each section of the test is 3.53, 3.94 and 5.99 respectively. The standard, error of measurement of each section of the test is 2.06, 2.05 and 3.11 respectively. The mean scores of each section of the test is 11.13, 9.19 and 14.653 and the present validity of the test can be classified only as content validity.