scholarly journals Evaluation of Validity and Standardization in the Wechsler Computer Memory Package in Iranian Students

2016 ◽  
Vol 3 (3) ◽  
Author(s):  
Maryam Afsar

Introduction: Today evaluations of psychological indicators have a non new found role on the process of psychological evolution. One of these important indicators is memory. Purpose: the current research has the purpose of indicating the right norm from the Wechsler’s school memory sub-test software on girl and boy students studying at pre-university level in the city of Tehran in the 87-88 school year. Procedure: this research by nature is a descriptive study and of a survey and normalization type which has applicative aspects. For this purpose a sample of 370 people (N=370) consisting of 170 men and 200 women from between students at the pre-university level of the province of Tehran were selected by using multistage cluster sampling. To evaluate constructive validity and factorial structure of this test, factorial test was used and to compare the averages of the two groups (girl and boy) an independence t test was used. Also to calculate the final test coefficient from the internal consistency method calculation of Cronbach’s alpha coefficient has been used and from the retest method calculation of Pearson’s correlation coefficient between the scores obtained from two times performing the test has been used. Findings: the results obtained from the research showed between all of the 8 dimensions of Wechsler’s memory in the space of two performance in the frame of retest a positive meaningful relation exists (p<0/0001). Also the highest rate of correlation belonged to the reverse visual memory component (r=0/83) and the lowest index of correlation belonged to the auditory memory span component (r=0/40). Validation by using the retest method showed that between all the dimensions in the frame of two computer performance and a monthly retest a meaningful correlation exists among which the sum of the auditory memory (r=0/82) had the highest correlation and the sum of the visual memory (r=0/53) showed the lowest correlation. By using the independent t test comparison of the average score of boys and girls in the multiple memory dimensions showed that between the two groups considering the dimensions no meaningful difference exists (p>0/05). Conclusion: the current research findings can be considered in the application areas and in the area of psychometrics it can open the path.

2018 ◽  
Author(s):  
Dian Firda Lusi ◽  
Yerimadesi ◽  
Rahadian Zainul

Electrolyte and nonelectrolyte based discovery modules are available learning is valid and practical, but has not been tested its effectiveness. Therefore the study aims to reveal the effectiveness of electrolyte and nonelectrolyte solution modules on students' learning outcomes and critical thinking skills. The module effectiveness test is done through quasi experimental research with Pretest-Posttest Control Group Design design. Research population of all students of class X MIPA SMAN 2 Bukittinggi. The sample was taken by purposive random cluster sampling technique.. The research instrument used in the form of learning result test and critical thinking skill assessment sheet. Techniques of data analysis of learning outcomes by using SPSS 16 software and critical thinking skills with percentage techniques. Based on the result of the research, it is found that the experimental class N-gain (0.76) is higher than control class (0.67). The data analysis technique showed that the experimental and control classes were normally distributed and had homogeneous variance, so the t-test was performed. From the result of t-test analysis obtained (sig) 0.006 &lt;0.05 which indicates that experiment class learning outcomes are significantly higher than control class. Based on the data analysis of students critical thinking skills, the average score of students' critical thinking skills is 87%. The research findings show that the use of electrolyte and nonelectrolyte based discovery modules learning effective on student learning outcomes and critical thinking skills at SMAN 2 Bukittinggi


1969 ◽  
Vol 12 (1) ◽  
pp. 185-192 ◽  
Author(s):  
John L. Locke

Ten children with high scores on an auditory memory span task were significantly better at imitating three non-English phones than 10 children with low auditory memory span scores. An additional 10 children with high scores on an oral stereognosis task were significantly better at imitating two of the three phones than 10 children with low oral stereognosis scores. Auditory memory span and oral stereognosis appear to be important subskills in the learning of new articulations, perhaps explaining their appearance in the literature as “etiologies” of disordered articulation. Although articulation development and the experimental acquisition of non-English phones have certain obvious differences, they seem to share some common processes, suggesting that the sound learning framework may be an efficacious technique for revealing otherwise inaccessible information.


2018 ◽  
Vol 4 (2) ◽  
pp. 43-55
Author(s):  
Ika Yulianti ◽  
Endah Masrunik ◽  
Anam Miftakhul Huda ◽  
Diana Elvianita

This study aims to find a comparison of the calculation of the cost of goods manufactured in the CV. Mitra Setia Blitar uses the company's method and uses the Job Order Costing (JOC) method. The method used in this study is quantitative. The types of data used are quantitative and qualitative. Quantitative data is in the form of map production cost data while qualitative data is in the form of information about map production process. The result of calculating the cost of production of the map between the two methods results in a difference of Rp. 306. Calculation using the company method is more expensive than using the Job Order Costing method. Calculation of cost of goods manufactured using the company method is Rp. 2,205,000, - or Rp. 2,205, - each unit. While using the Job Order Costing (JOC) method is Rp. 1,899,000, - or Rp 1,899, - each unit. So that the right method used in calculating the cost of production is the Job Order Costing (JOC) method


2017 ◽  
Vol 1 (1) ◽  
pp. 37
Author(s):  
Happy Ikmal

Teaching and learning activities is a conscious activity and aims. Therefore, for these activities can be run well and achieve the expected goals, it must be done with the strategy or the right learning approach .. The purpose of this study were: 1) to describe the influence of Self-Concept on the results of studying chemistry at Class XI MA Pacet Mojokerto. 2) Describe the effect of self-efficacy on Learning outcomes chemistry in Class XI MA Pacet Mojokerto 3) Describe the effect of motivation on Learning outcomes chemistry in Class XI MA Pacet Mojokerto 4) Describe the relationship Self-concept, self-efficacy and motivation to Results studied chemistry at Class XI MA Pacet Mojokerto. From the results of the analysis can be summarized as follows: 1) There is a significant relationship between self-concept of the Learning outcomes chemistry inquiry model. T test against self-concept variables (X1) obtained regression coefficient (B) 0.440 (44.0%), coefficient (Beta) 0.091, tcount of 0.378 with significance 0.006 t. Because of the significance of t less than 5% (0.007 <0.05), the Nil Hypothesis (H0) is rejected and working hypothesis (Hi) is received. 2) There is a significant relationship between self-efficacy toward chemistry Learning outcomes inquiry model. T test for Self-efficacy variable (X2) obtained regression coefficient (B) 0.329 (32.9%), coefficient (Beta) 0.124, tcount of 0.436 with a significance of 0.009 t. Because of the significance of t less than 5% (0.008 <0.05), the Nil Hypothesis (H0) is rejected and working hypothesis (Hi) is received. 3) There is a significant relationship between motivation to learn chemistry results inquiry model. T test for motivation variable (X3) obtained regression coefficient (B) 0.130 (13.0%), coefficient (Beta) 0.065, tcount of 0.230 with a significance of 0.001 t. Because of the significance of t less than 5% (0.001 <0.05), the Nil Hypothesis (H0) is rejected and working hypothesis (Hi) received 4) From the calculation results obtained Fhitung value 2,249 (significance F = 0.001). So Fhitung> F table (2,249> 2:03) or Sig F <5% (0.001 <0.05). It means that together independent variables consisting of variable self-concept (X1), Self-efficacy (X2), motivation (X3) simultaneously to variable results of studying chemistry (Y).


Author(s):  
Shindy Lestari ◽  
Syahrilfuddin Syahrilfuddin ◽  
Neni Hermita ◽  
Zetra Hainul Putra

This research is to determine the effect of realistic mathematical approach on students’ learning motivation. The research method is pre-experiment of one group pretest posttest design. This study was conducted with 34 fifth grade students from a public school in Pekanbaru, Indonesia. The results indicate that students’ learning motivation significantly increases. Among six indicators measuring students’ learning motivation, the indicator of interesting activities in learning is the most increase, from 80.76% in pre-test to 86.40% in post-test. The average score of pretest in form of students’ learning motivation questionnaire before applying treatment was 90.56 while score posttest after treatment was 95,09 and the results of the research hypotheses using the comparative t-test tcount (6.997) > ttable (2.039). This means that there is an effect of applying the realistic mathematical approach to students’ learning motivation.


2021 ◽  
Vol 14 (1) ◽  
pp. 131-140
Author(s):  
Emily A. Mankin ◽  
Zahra M. Aghajan ◽  
Peter Schuette ◽  
Michelle E. Tran ◽  
Natalia Tchemodanov ◽  
...  

SLEEP ◽  
2021 ◽  
Vol 44 (Supplement_2) ◽  
pp. A250-A250
Author(s):  
Solbi Kang ◽  
Seockhoon Chung ◽  
Sooyeon Suh

Abstract Introduction Asian cultures, including Korea, are known to have a higher proportion of parent-child co-sleeping than Western cultures. While recent studies have shown that bed-sharing increases the mother’s depression and causes sleep problems for children, there has never been a study in Asia on the sleep problems of parents and children caused by co-sleeping. Therefore, we aim to investigate the types of sleep problems in children and their mothers’ insomnia severity due to co-sleeping. Methods This study was conducted in 79 mothers (mean age 33.65 ±3.98 years) who reported having insomnia due to their children. All participants had children between 6 to 36 months old. Participants were asked to answer the survey includes demographics, sleep environment, child’s sleep problems, child’s health status items and the mother’s insomnia (measured by the Insomnia Severity Index; ISI). Children’s age was divided into 5 age groups (6 – 11, 12 - 17, 18 - 23, 24 - 29, and 30 to 36 months). Frequency analysis and independent t-test were conducted. Results Of the total respondents, 72.2% (n=57) reported co-sleeping with their children. The most reported sleep problem in children was waking up in the middle of the night 51.9% (n=41), followed by difficulty in sleep initiation 12.7% (n=10), looking for mother or an attachment object 12.7% (n=10), sleep-limiting problems 7.5% (n=6), multiple problems 12.7% (n=10), and none 2.5% (n=2). An independent t-test results for determining whether co-sleeping caused a difference in the severity of maternal insomnia was significant in the 6 to 11 months group only (t=-2.336, p&lt;.05). The co-sleeping mother’s ISI average score (M=18.28) was significantly higher than mother who slept separate from her child (M=14.31). Conclusion Co-sleeping in Asian cultures is prevalent, and may require attention and intervention for mothers who report having insomnia due to their children’s sleep disturbance. Support (if any):


Author(s):  
Selma Lugtmeijer ◽  
◽  
Linda Geerligs ◽  
Frank Erik de Leeuw ◽  
Edward H. F. de Haan ◽  
...  

AbstractWorking memory and episodic memory are two different processes, although the nature of their interrelationship is debated. As these processes are predominantly studied in isolation, it is unclear whether they crucially rely on different neural substrates. To obtain more insight in this, 81 adults with sub-acute ischemic stroke and 29 elderly controls were assessed on a visual working memory task, followed by a surprise subsequent memory test for the same stimuli. Multivariate, atlas- and track-based lesion-symptom mapping (LSM) analyses were performed to identify anatomical correlates of visual memory. Behavioral results gave moderate evidence for independence between discriminability in working memory and subsequent memory, and strong evidence for a correlation in response bias on the two tasks in stroke patients. LSM analyses suggested there might be independent regions associated with working memory and episodic memory. Lesions in the right arcuate fasciculus were more strongly associated with discriminability in working memory than in subsequent memory, while lesions in the frontal operculum in the right hemisphere were more strongly associated with criterion setting in subsequent memory. These findings support the view that some processes involved in working memory and episodic memory rely on separate mechanisms, while acknowledging that there might also be shared processes.


2018 ◽  
Vol 7 (4.7) ◽  
pp. 19
Author(s):  
Zadeh Foroughinia ◽  
Hakimeh Mohammadzadeh ◽  
Reza Pourmirza Kalhori ◽  
Neda Kianipour

The concept of social capital, due to its nature and content, is associated with almost all the issues in the human, social and health fields. On the other hand, the role of happiness and joy in mental health, physical health, and social inclusion are very important in the field of health. The purpose of this study was to investigate the components of social capital and its relation with social happiness of students in Kermanshah University of Medical Sciences in 2017. This study is descriptive-correlational. The research population consisted of 450 students in Kermanshah University of Medical Sciences in 2017who were selected by cluster sampling. Bullen& Onyx Standard Social Capital Questionnaire and Oxford Happiness Questionnaire (OHQ) were used to collect data. Data were analyzed using descriptive and inferential statistics (Pearson correlation coefficient). Data analysis was performed using SPSS-23 software. In this research, social capital score was 3.17 ± 0.45 according to the students' score and the mean score of the social happiness was 3.68 ± 0.14. There was a positive and significant relationship between two variables of social capital and social happiness of students (r=0.423). Among the social capital fields, the variables of the value of life, trust, and security had the most and the least relationship with the overall social happiness. Social capital and its aspects have a direct and significant relationship with the social happiness; therefore, with increasing the social capital, the level of social happiness increases.  


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