An adaptive multivariate signed-rank test for the one-sample location problem

1991 ◽  
Vol 1 (1-2) ◽  
pp. 157-163
Author(s):  
Dawn PetersDawn
2004 ◽  
Vol 8 (4) ◽  
pp. 235-246 ◽  
Author(s):  
Michelle K. McDougall ◽  
Glen D. Rayner

This paper studies the effect of the normal distribution assumption on the power and size of the sign test, Wilcoxon's signed rank test and the t-test when used in one-sample location problems. Power functions for these tests under various skewness and kurtosis conditions are produced for several sample sizes from simulated data using the g-and-k distribution of MacGillivray and Cannon [5].


Author(s):  
Tamama Rofiqah

Teknik sosiodrama merupakan pemberian bantuan kepada siswa yang memiliki permasalahan dalam hubungan sosial dengan cara membentuk sebuah kelompok dan permasalahannya akan diselesaikan dengan bermain peran. Dengan mengikuti teknik sosiodrama ini siswa diharapkan dapat meningkatkan keterampilan dalam bertingkah laku dan bersosial. Penelitian ini bertujuan untuk mengetahui apakah teknik sosiodrama dapat mengurangi perilaku agresi verbal siswa. Jenis penelitian ini adalah penelitian eksperimen dengan rancangan Pre-Eskperimen ( The One Group Pretest-Posttest Design). Penelitian dilakukan di MTs Islamic Center Nahdlatul Wathan dengan sampel penelitian sebanyak 20 orang. Instrument yang digunakan adalah angket skala likert. Data dianalisis dengan menggunakan rumus Wilcoxon Signed Rank Test. Temuan penelitian menunjukkan bahwa secara umum perilaku agresi verbal siswa dapat dikurangi melalui penerapan teknik sosiodrama. Oleh karena itu, salah satu cara yang dapat digunakan oleh guru BK dalam menangani siswa yang berperilaku agresi adalah dengan menerapkan teknik sosiodrama.


2020 ◽  
pp. emermed-2020-210124 ◽  
Author(s):  
Lois Lee ◽  
Rebekah Mannix ◽  
Romain Guedj ◽  
Shu-Ling Chong ◽  
Sidney Sunwoo ◽  
...  

BackgroundPast epidemics, including influenza, have resulted in increased paediatric patient volume in EDs. During the early weeks of the COVID-19 pandemic, it was unclear how ED volume would be impacted in paediatric hospitals. The objective of this study was to examine differences in the international experience of paediatric ED utilisation and disposition at five different children’s hospitals.MethodsWe obtained data on ED volume, acuity level and disposition (hospitalisation and intensive care unit (ICU) admission) for the time period 1 December1–10 August for the years 2017–2020 from hospitals in five cities (Boston, Massachusetts, USA; Singapore; Melbourne, Australia; Seattle, Washington, USA; and Paris, France). Per cent change was analysed using paired t-tests or Wilcoxon signed rank test.ResultsOverall ED volume dramatically decreased in all five hospitals during the early months of COVID-19 compared with prior years. There was a more varied response of decreases in ED volume by acuity level, hospitalisation and ICU admission among the five hospitals. The one exception was a 2% increase in ICU admissions in Paris. As of August 2020, all hospitals have demonstrated increases in ED volume; however, they are still below baseline.ConclusionPaediatric EDs in these five cities demonstrated differential decreases of ED volume by acuity and disposition during the early months of the COVID-19 pandemic.


Author(s):  
Rebecca L. Heron ◽  
Lena Schwiekert ◽  
Julie Karsten

AbstractPeople with pedophilia (PWP) are highly stigmatized. Public opinion is strongly pre-consolidated – it is often assumed that every PWP commits child sex offenses. This presumption not only affects PWP negatively. Research suggests that this stigmatization may cohere with PWP actually committing child sex offenses. Various recent studies have investigated different kinds of anti-stigma interventions and their effectiveness. Direct contact to a PWP has not yet been investigated. The present pilot study aimed at finding out whether a dichotomous anti-stigma intervention can change psychology students’ attitudes towards PWP regarding perceived dangerousness, intentionality, deviance, and punitive attitudes. In a one sample pre-post design, we presented 162 students of the University of Groningen with both an educational lecture and direct contact to a PWP. Participants learned about child sex offending and pedophilia. Then, Gabriel, a PWP shared his experiences about growing up, coping, and living with pedophilia. Results of the one-sample Wilcoxon signed-rank test revealed significantly diminished negative attitudes towards PWP after the intervention. Students perceived PWP as less dangerous, having less intent, and being less psychologically deviant. Additionally, students’ punitive attitudes towards PWP diminished significantly. Also, a thematic analysis revealed that students were highly interested in the topic of pedophilia and greatly appreciative of Gabriel sharing his story. This pilot study was the first to provide evidence for the effectiveness of a combination of an educational lecture and direct contact to a PWP as an anti-stigma intervention.


2021 ◽  
Vol 10 (1) ◽  
pp. 91-99
Author(s):  
Nining Sri Ningsih ◽  
Enggi Bachrudin

Latar belakang: Perilaku Bullying sangat berpengaruh terhadap psikologis anak remaja disebabkan dengan adanya tindakan verbal dan non verbal, salah satunya remaja akan mengalami banyak perubahan, baik dari segi fisik, kognitif, sosial, dan emosional dapat membantu meningkatkan kesehatan, membantu mengatasi distress psikologis dengan melakukan suatu tindakan regulasi emosi. Tujuan penelitian: Untuk mengetahui Pengaruh Pendidikan Kesehatan Regulasi Emosi Terhadap Kecenderungan Perilaku Bullying Pada Kelompok Teman Sebaya Anak Remaja di SMPN 3 Semparuk, Tahun 2020. Desain penelitian: Dalam penelitian ini digunakan oleh peneliti quasi eksperimen dengan pendekatan kuantitatif dengan rancangan The One Grup Pretest-Posttest Design. Desain ini digunakan sebelum dan sesudah diberikan perlakuan dan hasilnya dapat diketahui lebih akurat karena membandingkan dengan sebelum diberikan. Hasil penelitiain : diketahuai dari nilai Z pada variabel pengetahuan adalah -5,987, dan nilai signifikasi 0,000. Karena nilai sig. 0,000 < 0,05 maka dapat di simpulkan bahwa ada perbedaan antara hasil kecenderungan perilaku bullying sebelum dan sesudah diberikan pendidikan kesehatan mengenai regulasi emosi, maka ada pengaruh pendidikan kesehatan regulasi emosi terhadap kecenderungan perilaku bullying pada kelompok teman sebaya anak remaja di SMPN 3 Semparuk” (Sig 0,000 < 0,05). Kesimpulan dan saran : berdasarkan uji analisis Wilcoxon Signed Rank Test ada pengaruh pendidikan kesehatan regulasi emosi terhadap kecenderungan perilaku bullying pada kelompok teman sebaya anak remaja di SMPN 3 Semparuk”.


2016 ◽  
Vol 7 (1) ◽  
pp. 58
Author(s):  
Sinara Andressa Troian ◽  
Keli Vicenzi ◽  
Márcia Keller Alves

The quest for improved life quality has grown over the years, boosting research into the identification of bioactive substances in food. The polyphenols found in grapevines currently represent a broad area of research due to the benefits it has brought to people's health. This paper aimed to analyze whole grape, reconstituted and sweetened juice sold in the city of Bento Gonçalves and surrounding area to determine comparatively their levels of total polyphenols and resveratrol. This study consisted of eleven samples of grape juice from nine different brands. The samples were subdivided into whole grape juice, reconstituted grape juice and sweetened grape juice. The presence of resveratrol and polyphenols in each sample was determined by liquid chromatography and by reading a spectrophotometer at 280 nm, respectively. Variables with normal distribution were compared using the t-student test and Wilcoxon signed-rank test was applied to the nonparametric variables. Total polyphenol contents found in this study ranged from 18,50 to 107,95 mg/L. The highest average of polyphenols was found in the whole grape juice (85,71 mg/L), which is statistically higher (p = 0,009) than the one found in the sweetened juice (21,48 mg/L). The resveratrol content ranged from 0,45 to 2,60 mg/L, and no concentration was a found in the sweetened juice. The whole grape juice and the reconstituted juice showed the best results and therefore represent the best way to obtain these antioxidants and their benefits for the human body.


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