scholarly journals VALIDITY AND RELIABILITY ANALYSES FOR THE NATURE OF SCIENCE INSTRUMENT SECONDARY (NOSI-S)

2017 ◽  
Vol 16 (3) ◽  
pp. 429-437
Author(s):  
Senar Temel ◽  
Şenol Şen ◽  
Özgür Özcan

This research aims to adapt The Nature of Science Instrument Elementary Scale (NOSI-E) developed by Peoples (2012) into Turkish for secondary school students and to analyse the psychometric properties of the scale setting out from the fact that it is a necessity of science education aimed to achieve for students/prospective teachers to have adequate understanding of the nature of science. The validity analyses for the scale were performed with Confirmatory Factor Analysis (CFA) and Cronbach alpha (α) coefficients were calculated for reliability. Following CFA, it was taken for granted that the fit indices for the model met the goodness of fit criterion. On examining the fit indices, the scale was regarded to attain construct validity due to the fact that the χ2/df ratio (1.42) was below 3, that the RMSEA value was at the level of .04 and that the NNFI and CFI (>.90) values were at acceptable levels. On the other hand, α coefficients, which were the internal consistency coefficients calculated for the reliability analysis of the scale, were found to range between .631 and .775, and for the overall scale was calculated as .814. These reliability index values were considered to be at acceptable levels. Keywords: nature of science, NOSI-S, instrument reliability, secondary school students, instrument validity.

2022 ◽  
Vol 11 (2) ◽  
pp. 639-652
Author(s):  
Saralah Sovey ◽  
Kamisah Osman ◽  
Mohd Effendi

<p style="text-align: justify;">Computational thinking (CT) is a method for solving complex problems, but also gives people an inventive inspiration to adapt to our smart and changing society. Globally it has been considered as vital abilities for solving genuine issues successfully and efficiently in the 21st century. Recent studies have revealed that the nurture of CT mainly centered on measuring the technical skill. There is a lack of conceptualization and instruments that cogitate on CT disposition and attitudes. This study attends to these limitations by developing an instrument to measure CT concerning dispositions and attitudes. The instruments' validity and reliability testing were performed with the participation from secondary school students in Malaysia. The internal consistency reliability, standardized residual variance, construct validity and composite reliability were examined. The result revealed that the instrument validity was confirmed after removing items. The reliability and validity of the instrument have been verified. The findings established that all constructs are useful for assessing the disposition of computer science students. The implications for psychometric assessment were evident in terms of giving empirical evidence to corroborate theory-based constructs and also validating items' quality to appropriately represent the measurement.</p>


2017 ◽  
Vol 20 ◽  
Author(s):  
Fernando Chacón Fuertes ◽  
Carlos A. Huertas Hurtado

AbstractThe objective of the study was to determine the causal effects of school failure (SF) among secondary school students, belonging to five public schools within the region of Girardota, Colombia, through the validation of a psychosocial model with structural equations. A total of 319 students, 25% more males, enrolled in classes between 6th and 11th year, with an average age of 14 years. Furthermore, 265 parents and 200 teachers were also included in the sample. Participants answered the questions raised in 9 instruments. Of the total number of students, 63.8% were surveyed. The instruments were subjected to a pilot test and to the judgment of experts. In order to reduce the amount of data, exploratory and confirmatory factorial analyses were used. Other techniques of multivariate analysis such as decision trees and linear regressions were also used in order to previously evaluate the relationships between the independent variables (IV) and the dependent variable (DV). Afterwards, the Full SEM was calculated, yielding a model consisting of 34 variables (10 latent and 24 observable), with the following indexes of goodness of fit: CMIN/DF = 1.146, p = .058, IFI = 0.974, TLI = .970, CFI = .974, RMSEA = .027 and PCLOSE = 0.998. Theoretically, the model confirms the predictive value of the selected variables, with respect to school failure. The results are applicable to both the design of educational policies and the direct intervention in the classroom. In both contexts, strategies can be developed that reduce factors that negatively affect school performance, actively linking students, teachers and parents.


Retos ◽  
2020 ◽  
pp. 443-451
Author(s):  
José Roberto Arias García ◽  
Beatriz Fernández Díez ◽  
Cristina San Emeterio García

El interés por el estudio de las actitudes de los estudiantes hacia una materia reside en buscar mejorar la enseñanza. Este trabajo da a conocer un instrumento de medida de las actitudes hacia la Expresión Corporal tras un proceso de elaboración y validación. El resultado es un cuestionario estructurado en cuatro factores y 32 ítems dirigido a los estudiantes de Secundaria. El proceso de creación supuso el análisis de la validez de contenido, validez de constructo y fiabilidad. La validez de contenido se llevó a cabo siguiendo la fórmula de Lawshe para analizar la información aportada por un grupo de expertos. La validez de constructo supuso un análisis factorial de los datos extraídos del estudio piloto llevado a cabo. Para determinar la fiabilidad se tuvo en cuenta el cálculo del estadístico alfa de Cronbach. Terminado el proceso de construcción, el resultado es un instrumento de medición de las actitudes hacia la Expresión Corporal de los alumnos de Educación Secundaria. Abstract. The center of interest of studying students’ attitudes towards a subject lies in its possibility to improve the teaching process. This work reveals an instrument to measure attitudes towards Corporal Expression, after a process of elaboration and validation. As a result, we make a questionnarie aimed at Secondary School students and structured into four factors and 32 items known. The building process of the questionnarie consisted of content validity analysis, construct validity, and reliability. Content validity was carried out following the Lawshe formula to analyze the information provided by the group of experts. Construct validity involved a factorial analysis of the data extracted from a pilot study. In order to check reliability, Cronbach alpha statistical calculation was taken into consideration. At the end of this procedure, we obtain an instrument for measuring attitudes towards Corporal Expression in Secondary School Students as the main result.


Author(s):  
Asem ABDALLA SALAMEH AL- ISSA

This study aims to identify the level of educational values that are practiced by the secondary school students' in Bani Obaid Brigade in Irbid city based on their point of view. This study seeks to identify the differences in the responses of the sample members on their practices of educational values ​​according to two variables which are gender and streams. The study covered the total number of all students in the 11th grade of secondary school in Bani Obaid Brigade which is (1884) in the second semester of the academic year 2018/2019. Then, A random sample was chosen from the study population which consist of (754) equal to (4%) percent. After the researcher completed the investigation, the number of respondents who answered the questionnaire was (700). In order to achieve the objectives of the study, the researcher prepared a questionnaire which was finalized after the procedures of validity and reliability for (36) paragraphs. The paragraphs were divided into four scopes: worship scope, moral scope, the national scope, and the aesthetic scope. The results of the study are summarized in the following points: 1- Practicing of the secondary school students in the Bani Obaid Brigade for educational values ​represents the highest average which is (3.89) 2- There are statistically significant differences for the educational value ​​ attributed to the gender variable. The responses of the sample members showed the differences for the male students at level (α = 0.05) 3- There are not statistically significant differences at level (α = 0.05) in the responses of the sample members on the fields of educational values ​​due to the streams variable. 4- Based on the results of this study, the researcher recommends the teachers at the secondary schools at Bani Obaid Brigade in Irbid city to help the students to be more conscious about the necessity of the educational values which play a major role in their personal and social life. Similarly, the national value is one of most important values that the schools have to take care about it by encouraging the student to participate in the national events and festivals. Moreover, the researcher recommends the teachers to encourage the students to buy the national products in order to support the national economic. 5- The researcher suggests holding training courses for the teachers at Bani Obaid Brigade in Irbid city to improve their ability for learning students about the national values. Additionally, he recommends them to conduct researches that help to follow up the students’ behaviors for the educational values in the secondary schools.


2018 ◽  
Vol 225 (3) ◽  
pp. 1-24
Author(s):  
Assist. Prof. Dr. Mohammed Abdul Karim Taher

      The secondary  stage is an important phase in the life of the students, because it is the period of physical, psychological andsocial changes,in the same time, emotional instability is presenting the features of human behavior of his heractivities. Psychopathy behavior is .socially unacceptable, which the students suffer in the secondary school that can be shown in the attackingthe schools’ properties   and lack of respect for teachers and colleagues.In addition to that, they don’t care for the values of school and social norms, and makeconfusion inside the school corridors. The present study aims to measure the current behavior among secondary school students; the researcher constructed a measurementtool of behavior. Thefinal form of the measurement tool is about (38) paragraph, it has been approved and to whatextent the distinction paragraphs show the validity and reliability byconducting thestatistical means.  The sample of the study is (400) students, the researcher conducts and applies the test on about (200) students who are selected randomly.


2018 ◽  
Vol 7 (1) ◽  
pp. 398
Author(s):  
Bahadır Kılcan

<p><strong>Abstract</strong></p><p>This study aims to develop a scale to measure eight-grade secondary school students' attitudes towards individual peace. The items of the scale have been prepared by the researcher based on a literature review. The study sample included 223 eight grade students from different schools in the Mamak district of Ankara for the 2015-2016 school year. At the end of the analysis, the correlation coefficients obtained from item-factor total and adjusted correlation were found to be above .21 and all items were statistically significant. In the exploratory factor analysis (EFA), the scale items were split into four dimensions: "State before Peace", "Factors for Peace", "Factors for Sulking" and "Assitance in Peacemaking". The Chi-square (X2) value appropriate for the model developed based on the results of the Confirmatory Factor Analysis (CFA) and statistical significance levels showed that the proposed model was appropriate for the collected data. Reliability coefficients tested for the whole scale and its sub-dimensions revealed that the scale was suitable to measure eight-grade secondary school students' attitudes towards peace.</p><p> </p><p><strong>Öz</strong></p><p>Bu çalışmanın amacı, ortaokul sekizinci sınıf öğrencilerinin bireysel barışa yönelik tutumlarının belirlenmesinde kullanılacak bir ölçme aracı geliştirmektir. Ölçme aracının maddeleri araştırmacı tarafından ilgili alanyazın incelenerek hazırlanmıştır. Araştırmanın çalışma grubunu 2015-2016 öğretim yılının bahar döneminde Ankara İli Mamak İlçesinde bulunan okullarda öğrenim gören toplam 223 sekizinci sınıf öğrencisi oluşturmaktadır. Yapılan istatistikler sonucunda ölçeğin madde-faktör toplam ve düzeltilmiş korelasyonlarında elde edilen korelasyon katsayıları .21’in üzerinde olduğu ve tüm maddelerin istatiksel olarak anlamlı olduğu saptanmıştır. Yapılan açımlayıcı faktör analizi (AFA) sonucunda ölçek maddeleri; “Barışma Öncesi Durum”, “Barışma İçin Etmenler”, “Küsme İçin Etmenler” ve “Barışmada Yardım” olmak üzere dört boyutta toplanmıştır. Çalışma kapsamında yapılan doğrulayıcı faktör analizi (DFA) sonuçlarına göre ölçek için oluşturulan modele uygun Ki-kare (X<sup>2</sup>) değeri ve istatistikî anlamlılık düzeyleri, önerilen modelin toplanan verilere uygun olduğunu göstermiştir. Ölçeğin geneline ve alt boyutlarına yönelik test edilen güvenirlik katsayıları, ortaokul sekizinci sınıf öğrencilerinin bireysel barışa yönelik tutumlarını ölçmede kullanılabilecek nitelikte olduğunu ortaya koymuştur.</p>


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