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Yosef Wijoyo
Sanata Dharma University
Chemistry Education Environmental Science Health Professions Medicine & Pharmacology Nursing Physics Social Sciences Other

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REFLEKSI PRAKTIKUM KIMIA ORGANIK CALON PENDIDIK KIMIA MENGGUNAKAN REKAMAN VIDEO eko yuliyanto; Yosef Wijoyo; Enade Perdana Istyastono; Fitria Fatichatul Hidayah
JURNAL PENDIDIKAN SAINS UNIVERSITAS MUHAMMADIYAH SEMARANG Vol 6, No 2 (2018): JURNAL PENDIDIKAN SAINS UNIVERSITAS MUHAMMADIYAH SEMARANG
Publisher : Pendidikan Kimia Unimus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/jps.6.2.2018.76-83

Abstract

Organic chemistry is one of the courses that must be taken by a pre-service teacher. However, not all students like the subject, on the other hand they have to learn. Practicum of Organic chemistry  has been carried out for some time by chemistry education students. Therefore to bridge the gap and problems. It needs to be an improvement to find out the problem. Therefore it is necessary to reflect on organic chemistry practicum using videos. This research was in the form of observation of learning organic chemistry which was participated by 29 semester 3 chemistry education students with acetic acid synthesis material, saponification and synthesis of butyl acetate. Based on the results of the study concluded that 1). It is important to prepare students' skills in using equipment 2). Practical topics getting closer to everyday products, will be more interesting, 3).Preliminary confirmation before practicum is important to ensure student readiness, 4). Reflection is very helpful in reminding lecturers of the results of learning objectives.
Effect of a Theory of Planned Behavior–Based Video on Attitude, Perceived Behavioral Control, and Consumption Intention among University Students Komang Alan Ariadi; Yosef Wijoyo
Jurnal Ners Vol. 10 No. 2 (2026): APRIL 2026
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jn.v10i2.57171

Abstract

Alcohol consumption among university students remains a public health concern. Guided by the Theory of Planned Behavior (TPB), this study evaluated a TPB-based educational video compared with presentation-based education in modifying attitude, subjective norm, perceived behavioral control (PBC), and alcohol consumption intention. A quasi-experimental pretest–posttest control group design was conducted with 120 students allocated to an educational video group (n = 60) or a presentation group (n = 60). Outcomes were assessed at baseline, two weeks, and four weeks post-intervention. Friedman, Wilcoxon, Mann–Whitney U, and Spearman correlation tests were applied, with baseline equivalence confirmed. Both groups showed significant within-group improvements (p < 0.05). Between-group analysis indicated greater reductions in favorable attitudes at both follow-ups and greater sustained improvement in PBC in the video group (p < 0.05), with small-to-moderate effect sizes (r = 0.23–0.29). No between-group differences were observed for subjective norm or intention, although intention declined in both groups. PBC showed the strongest association with intention. In conclusion, a brief TPB-based educational video more effectively strengthened internal behavioral determinants, particularly attitude and short-term PBC. However, comparable changes in subjective norm and intention suggest that reductions in alcohol-related intention may require complementary strategies addressing peer influence and social norms
Co-Authors Eko Yuliyanto Enade Perdana Istyastono Fitria Fatichatul Hidayah Komang Alan Ariadi