point average in four core subjects. Thus, Pimsleur used GPA as a measure of study habits, which can be very important in foreign language learning, and a good predictor of success. Thus, the four final factors contributing to language learning aptitude measured on the PLAB are verbal ability, auditory ability, motivation and study habits. 1965–66, a study was conducted to calculate the predictive validity of the PLAB. Forty-one schools in thirteen different states participated in the study, which administered the PLAB to students in grades 7, 8, and 9 at the beginning of the school year. The students' final grades in a beginning language course were used to calculate the validity of the PLAB and provide statistical norms and expectancy tables. Sections The final version of the PLAB contains six parts (Pimsleur, et al. 2004), each one testing different aspects of the four predictive factors (verbal ability, auditory ability, motivation and grade point average): Part 1 – Grade Point Average – calculates the student's grade point average in areas other than language learning Part 2 – Interest – measures the student's interest in learning a foreign language and is a measure of motivation Part 3 – Vocabulary – tests word knowledge in English and is a measure of verbal ability Part 4 – Language Analysis – tests the student's ability to reason logically in terms of a foreign language and is another aspect of verbal ability Part 5 – Sound Discrimination – tests the ability to learn new phonetic distinctions and to recognize them in different contexts and is a measure of auditory ability Part 6 – Sound-Symbol Association – tests the ability to associate sounds with written symbols and is another measure of auditory ability Parts 1 and 2 are not aptitude measures. Part 1 is a measure of study habits and Part 2 is measure of motivation. Both study habits and motivation correlate with success in foreign language study. Depending on the teacher's motive in testing language aptitude, these parts could be deleted, or they could be translated to the student's native language. Therefore, the PLAB could be used with students whose mother tongue is not English but whose proficiency in English is high enough to take the test. Part 3 is a short test of student's vocabulary in English. The grade level of the vocabulary is approximately grade 9-12. This part exists because breadth of native language