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This test consisted of 140 questions which reflected the 140,000 word families in English used in written receptive. Each correct answer was multiplied
by 100 to get the estimation of the rough word family the students had. This test had been widely used to measure the vocabulary size and suitable both for L1
speakers or L2 speakers. This test was also suitable for intermediate level learner such as the first-semester students of English Department of Muhammadiyah
University of Yogyakarta.
2. Morphological Awareness Test
The instrument to test the students’ morphological awareness was Morphological Awareness Test by Chang, C. M., Wagner, R. K., Muse, A.
Chow, H. S .
2005. This test consisted of two parts: Morpheme Identification Awareness Test and Morphological Structure Awareness Test.
a. Morpheme Identification Awareness Test
Morpheme Identification Awareness Test was a test to measure the students’ ability to breakdown complex words into elements or morphemes. It was
a test by Chang, C. M., Wagner, R. K., Muse, A. Chow, H. S 2005. It consisted of ten questions. The questions were ten complex words, and the
students were asked to breakdown the words into morphemes. In addition, they were asked to state the meaning of each morpheme. The total score of the test was
20 as each word worth 2 points. The complex words varied from compound words, words with inflections, and words with derivations. The students needed to
answer the questions by stating the meaning of the words and the meaning of each morpheme the word had.
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b. Morphological Structure Awareness Test
The other kind of Morphological Awareness Test used in this research was Morphological Structure Awareness Test. It aimed
at measuring the students’ ability of morphological structure awareness. It required the students to make use
the linguistic knowledge to derive new meaning .
There were ten questions in the test of morphological structure awareness. Each question provided an example
sentence as the clue for the question. The students needed to relate the clue of the example sentence to be applied to the questions as the answer. It required the
students to produce words or phrases after examining the clue in the example sentence. One point was given for every correct answer. The total score was ten.
Correct spelling was important because misspelling might affect the meaning of the words. The questions varied from plural noun, S-V agreement, past verbs, and
compound words.
G. Validity and Reliability of the Instruments
All of the instruments used in this current study were instruments which widely used in the language research. Nation was well known for his instruments
which measure some aspects of vocabulary. One of the instruments was Vocabulary Size Test. The instrument was proven to be valid and reliable. This
current study adopted the instrument to be used to obtain the data of vocabulary size. A pilot project was conducted to get the picture of the data of the tests.
In addition, the current study adopted the instrument of morphological awareness test from the study done by Farsi 2008. Originally, the instrument
