2018 ◽  
Vol 43 (5) ◽  
pp. 388-401 ◽  
Author(s):  
Hulya D. Yigit ◽  
Miguel A. Sorrel ◽  
Jimmy de la Torre

2014 ◽  
Vol 9 (2) ◽  
Author(s):  
Nurwahidah Nurwahidah ◽  
Yayuk Andayani ◽  
I Nyoman Loka

Abstrak: Penelitian ini merupakan penelitian quasi experimental yang bertujuan untuk mengetahui pengaruh model pembelajaran berbasis proyek terhadap hasil belajar kimia materi pokok sistem periodik unsur pada siswa kelas X SMAN 1 Mataram tahun ajaran 2013/2014. Hasil belajar dalam penelitian ini meliputi hasil belajar dalam bentuk pengetahuan dan hasil belajar dalam bentuk sikap (kerjasama siswa). Instrumen yang digunakan yaitu tes multiple choice. Data hasil penelitian yang dianalisis statistik dengan uji t dan lembar observasi kerjasama yang dianalisis deskriptif. Hasil penelitian menunjukkan bahwa pada kelas eksperimen  diperoleh nilai rata-rata 84,62 dengan ketuntasan klasikal 71,79%, sedangkan pada kelas kontrol diperoleh nilai rata-rata 83,95 dengan ketuntasan klasikal 71,05%. Hasil uji-t pada taraf signifikan 5% diperoleh Fhitung 0,28 < Ftabel 1,68 yang berarti Ho pada penelitian ini diterima. Hasil observasi kerjasama pada kelas eksperimen memiliki tingkat kerjasama yang sama dengan kelas kontrol yaitu “sangat tinggi”. Hal ini menunjukkan bahwa pembelajaran berbasis proyek tidak berpengaruh lebih baik terhadap hasil belajar kimia materi pokok sistem periodik unsur kelas X SMAN 1 Mataram tahun ajaran 2013/2014. Kata-kata kunci : Pembelajaran berbasis proyek, hasil belajar, sistem periodik unsur  Abstract: This study was a quasi experimental that purpose to know the effect of project-based learning on learning achievements on elements periodic system for  X grade students of SMAN 1 Mataram in 2013/2014 academic year. The students’ achievements were knowledge and attitude aspects (student’s cooperation). The instrument uses for data collection are a multiple choice test which is statistical analyzed by applying t-test and observation sheet about student cooperation which is analyzed descriptively. The study revealed that experimental group obtained 84.62 on average with classical mastery was 71.79% whereas the control group obtained 83.95 on average with classical mastery was 71.05%. The results of t-test on 5% level of significant shows Facc 0.28 < Ftable 1.68 which means that Ho is accepted. The result of observation sheets shows that whether the students in experimental group or in control group have an equal level of cooperation. It shows “very high” level of cooperation. In summary, project-based learning has no effect on the students’ chemistry learning achievements on elements periodic system  for X grade students of SMAN 1 Mataram in 2013/2014 academic year. Keywords: Project-based learning, learning result, elements periodic system


Psychometrika ◽  
1980 ◽  
Vol 45 (4) ◽  
pp. 467-478 ◽  
Author(s):  
Shizuhiko Nishisato ◽  
Wen-Jenn Sheu

2001 ◽  
Vol 26 (4) ◽  
pp. 381-409 ◽  
Author(s):  
Daniel M. Bolt ◽  
Allan S. Cohen ◽  
James A. Wollack

A mixture item response model is proposed for investigating individual differences in the selection of response categories in multiple-choice items. The model accounts for local dependence among response categories by assuming that examinees belong to discrete latent classes that have different propensities towards those responses. Varying response category propensities are captured by allowing the category intercept parameters in a nominal response model ( Bock, 1972 ) to assume different values across classes. A Markov Chain Monte Carlo algorithm for the estimation of model parameters and classification of examinees is described. A real-data example illustrates how the model can be used to distinguish examinees that are disproportionately attracted to different types of distractors in a test of English usage. A simulation study evaluates item parameter recovery and classification accuracy in a hypothetical multiple-choice test designed to be diagnostic. Implications for test construction and the use of multiple-choice tests to perform cognitive diagnoses of item response patterns are discussed.


2017 ◽  
Vol 33 (3) ◽  
pp. 530
Author(s):  
Tao Xin ◽  
Mengcheng Wang ◽  
Tour Liu

<p>Multiple-choice item is wildly used in psychological and educational test. The present study investigated that if a multiple-choice item have an advantage than a dichotomous item on ability evaluation.An item response model,nested logitmodel (NLM),was used to fit the multiple-choice data. Both simulation study and empirical study indicated that the accuracy and the stability of ability estimation were enhanced by using multiple-choice model rather than dichotomous model, because more information was included in multiple-choice items’ distractors. But the accuracy of ability parameter estimation showed little differences in 4-choice items, 5-choice items and 6-choice items. Moreover, NLM could extract more information from low-level respondents than from high-level ones, because they hadmore distractor chosen behaviors. Furthermore, respondents at different trait levels would be attracted by different distractors in an empirical study of a Chinese Vocabulary Test for Grade 1 by using the changing traces of distractor probabilities calculated from NLM. It is suggested that the responses of students at different levelsmight reflect the students’ vocabulary development process.</p>


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