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All Journal Proyeksi: Jurnal Psikologi Jurnal Penelitian dan Evaluasi Pendidikan Psikologika : Jurnal Pemikiran dan Penelitian Psikologi Jurnal Psikologi Jurnal Pendidikan dan Pengajaran Jurnal Psikologi Humanitas: Indonesian Psychological Journal Journal of Education and Learning (EduLearn) Intuisi Jurnal Kawistara : Jurnal Ilmiah Sosial dan Humaniora Persona: Jurnal Psikologi Indonesia AJIE (Asian Journal of Innovation and Entrepreneurship) Benefit: Jurnal Manajemen dan Bisnis Psikohumaniora: Jurnal Penelitian Psikologi Gadjah Mada Journal of Psychology Jurnal Psikologi Perseptual INSAN Jurnal Psikologi dan Kesehatan Mental Jurnal Sistem dan Manajemen Industri Jurnal Manajemen Pemasaran Jurnal Ilmiah Psikologi Mind Set RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi MANASA, Jurnal Ilmiah Psikologi Psycho Idea Gadjah Mada Journal of Psychology (GamaJoP) Jurnal Psikologi Universitas Gadjah Mada Gadjah Mada Journal of Professional Psychology (GamaJPP) Buletin Psikologi Psikologia : Jurnal Psikologi Humanitas: Indonesian Psychological Journal SAINTEK Jurnal Kawistara RADIAL: Jurnal Peradaban Sains, Rekayasa dan Teknologi Journal of Industrial and Mechanical Engineering
Wahyu Widhiarso
Fakultas Psikologi - Universitas Gadjah Mada
Religion Arts Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mechanical Engineering Neuroscience Physics Public Health Social Sciences Transportation Other

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Assessment of the psychometric properties of the Indonesian version of the General Self-Efficacy Scale-12 (GSES-12) in a sample of Indonesian high school students Soetjipto, Helly Prajitno; Putra, Muhammad Dwirifqi Kharisma; Widhiarso, Wahyu; Khakim, Zulfikri
Psikohumaniora: Jurnal Penelitian Psikologi Vol. 8 No. 2 (2023)
Publisher : Faculty of Psychology and Health - Universitas Islam Negeri Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/pjpp.v8i2.18024

Abstract

In recent decades, self-efficacy has been one of the major subjects of interest in the field of psychology, with numerous studies published on the topic. This study aims to examine the psychometric features of the General Self-Efficacy Scale-12 (GSES-12), a widely used instrument for assessing general self-efficacy. The Indonesian adaptation of the GSES-12 was validated using item factor analysis (IFA). The study involved a total of 584 high school student participants (M-age = 16.02, SD-age = 1.39; boys = 266, girls = 318). The results obtained from the IFA indicate that the psychometric properties of the GSES-12 were satisfactory. The results exhibited a strong fit with the second-order IFA models and all items had statistically significant factor loadings. In addition, the results obtained from the multigroup IFA indicate that the configural invariance testing models exhibited a satisfactory level of goodness-of-fit (RMSEA < 0.06, CFI & TLI > 0.90). These findings suggest that there were no differences between the genders in the factor structure of the GSES-12.
Perbandingan Exponential Smoothing With Trend dan Linear Trend Line pada Peramalan Penjualan Topsin 500 SC Hardari, Wafika Putri; Widhiarso, Wahyu
Journal of Industrial and Mechanical Engineering Vol 3 No 2 (2025): Journal of Industrial and Mechanical Engineering
Publisher : Department of Industrial Engineering, Universitas Jenderal Soedirman.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jimien.2025.3.2.16990

Abstract

Suatu perusahaan dalam kondisi ideal diharapkan dapat meramalkan penjualan dengan akurasi tinggi sehingga produksi, persediaan, dan distribusi dapat dikelola secara optimal. Hal ini akan membantu PT. XYZ menjaga ketersediaan produk, meminimalkan risiko kelebihan atau kekurangan stok, dan menghindari biaya tambahan akibat ketidakseimbangan antara permintaan dan persediaan. Namun kenyataannya, metode peramalan penjualan yang digunakan PT. XYZ masih bersifat manual dan belum mampu menangkap perubahan permintaan secara akurat dalam menghadapi fluktuasi tajam pada penjualan Topsin 500 SC. Ketidakakuratan dalam peramalan tersebut menyebabkan perusahaan menghadapi risiko overstock. Penelitian ini bertujuan untuk mengevaluasi hasil peramalan dari dua metode peramalan yang lebih efektif dalam meramalkan penjualan Topsin 500 SC dan memverifikasi akurasi metode peramalan terpilih. Penelitian ini menggunakan metode Exponential Smoothing with Trend dan Linear Trend Line. Peta tracking signal digunakan untuk memverifikasi metode peramalan terbaik yang telah dipilih. Berdasarkan hasil perhitungan menunjukkan MAD, MSE, dan MAPE terkecil berada pada metode Linear Trend Line yang memiliki MAD sebesar 1.529,314, nilai MSE sebesar 5.743.558 dan nilai MAPE sebesar 10,956%. Metode Linear Trend Line terverifikasi menjadi metode yang paling efektif dan memiliki tingkat akurasi peramalan di masa mendatang
Co-Authors Acintya Ratna Priwati Adhie Tri Wahyudi Anandhita Perwitasari Artikasari, Yasinta Vania Avin Fadilla Helmi Ayudia Indrawati Ayudia Indrawati, Ayudia Ayuningtyas, Annisa Ardi Budiman, Mutmainnah Djemari Mardapi Farah Fauziyah, Farah Fuadi, Muhammad Nurrifqi Handoko Wijatmiko Hapsari, Anindita Dwi Hardari, Wafika Putri Helly Prajitno Soetjipto, Helly Prajitno Istiqomah, Alifah Nur Johana Endang Prawitasari Khairunisa, Alifa Rahmi Khakim, Zulfikri Kumala Windya Rohmani M Noor Rochman Hadjam M. Noor Rochman Hadjam M. Noor Rochman Hadjam M. Noor Rochman Hadjam Marvianto, Ramadhan Dwi Marvianto, Ramadhan Dwi Medina, Karima Nada Mikael Reno Prasasto Muhammad Ahmad Mustari Mustari, Muhammad Ahmad Pradana, Rizal Galih Prasasto, Mikael Reno Putra, Muhammad Dwirifqi Kharisma Rachmanie, Aisha Sekar Lazuardini Ramadhan Dwi Marvianto Ramadhan, Syukron Retno Suhapti Rosid, Ibnu Abdul Safirah Hanifa Siti Urbayatun Sofia Retnowati Wahyu Jati Anggoro Yasinta Vania Artikasari