scholarly journals When Learners Prefer the Wrong Explanation: Misconceptions in Physics Explainer Videos and the Illusion of Understanding

2021 ◽  
Author(s):  
Christoph Kulgemeyer ◽  
Jörg Wittwer
Keyword(s):  
Experimental Study ◽  
Control Group ◽  
Control Groups ◽  
Physics Instruction ◽  
University Courses ◽  
Mistaken Belief ◽  
And Control ◽  
Immense Potential ◽  
Group D ◽  
Experimental Group

Online explanation videos on platforms like YouTube are popular among students and serve as an important resource for both distance learning and regular science education. Despite their immense potential, some of the explainer videos for physics include problematic explanation approaches, possibly fostering misconceptions. However, some of them manage to achieve good ratings on YouTube. A possible reason could be that explainer videos with misconceptions foster an “illusion of understanding”—the mistaken belief that a topic has been understood. In particular, misconceptions close to everyday experiences might elicit greater interest and appear more convincing than scientifically correct explanations. This experimental study was conducted to research this effect. Physics learners (N = 149), with a low prior knowledge enrolled in introductory university courses on primary education, were randomly assigned to experimental and control groups. While the experimental group watched a video introducing the concept of force relying on misconceptions, the control group watched the scientifically correct video. Both videos were comparable in terms of comprehensibility and duration. In the posttest, the experimental group believed that the video was scientifically correct, well-explained, and that they do not require further instruction to understand the concept—indicators of an illusion of understanding. The video including misconceptions was perceived as better understandable than the scientifically correct video (d = 0.62*). The experimental group was significantly more convinced by the misconception after watching the video than the control group (d = 1.86**). They learnt more erroneous knowledge about the misconception than the control group about the scientifically correct concept (Cohen’s q = 0.37*). We argue that this might become problematic (a) in physics instruction because students who have watched a misleading video might regard further teaching in school as irrelevant, and (b) learners might tend to rate videos including misconceptions better on an online platform like YouTube.

Effectiveness of Visual Perceptual Training on Reading Skills of Non-Readers, an Experimental Study

1974 ◽  
Vol 38 (3_suppl) ◽  
pp. 1147-1153 ◽  
Author(s):  
Elaine Bieger
Keyword(s):  
Experimental Study ◽  
Reading Achievement ◽  
Visual Perception ◽  
Reading Skills ◽  
Control Group ◽  
Remedial Instruction ◽  
Control Groups ◽  
Perceptual Training ◽  
And Control ◽  
Experimental Group

48 second and third grade non-readers who were estimated to have visual perceptual deficiences were randomly placed in experimental and control groups. The experimental group received perceptual training plus remedial instruction. The control group received only remedial instruction. After 7 mo., the low perceivers given visual training improved significantly in visual perception, but improvements were not reflected in improved reading achievement. Controls gained 8 mo. in reading achievement versus 6 mo. for experimentals, indicating that visual perceptual training did not influence the achievement of reading skills for this group.

THE EFFECT OF APPLYING ANIMAL CARTOON PICTURES ON STUDENTS’ ACHIEVEMENT IN WRITING NARRATIVE TEXT

2017 ◽  
Vol 6 (1) ◽  
Author(s):  
Hasanul Arifin Zul And Masitowarni Siregar
Keyword(s):  
T Test ◽  
Narrative Text ◽  
Control Group ◽  
First Year ◽  
Writing Achievement ◽  
Control Groups ◽  
Post Test ◽  
Written Test ◽  
And Control ◽  
Experimental Group

This thesis is focused on the investigation of the effect of applying animal cartoon pictures on students’ achievement in writing narrative text. This study aims to find whether applying animal cartoon pictures significantly affect the students’ writing achievement or not. The data in this study were obtained by administering a written test. The population was the 2015/2016 first year (grade XI) of SMA Swasta Nusantara Lubuk Pakam and 66 students were taken as the sample by using random sampling. The sample was divided into two groups, experimental and control groups. The experimental group was taught by applying animal cartoon pictures while the control group without animal cartoon pictures (x = lecturing). The data were taken the scores from the pre-test and post-test to both experimental and control groups. These data were analyzed by using t-test. The result of computing the t-test obviously showed that t-observed is higher than t-table (5.21 >1,67) with the degree of freedom 64 (df =N-2) at the level significance 0,05 one tail test. It showed that the application of animal cartoon pictures significantly affected the students of SMA Swasta Nusantara Lubuk Pakam achievement in writing narrative text.

THE EFFECT OF APPLYING DEMONSTRATION METHOD ON STUDENTS’ ACHIEVEMENT IN SPEAKING SKILL AT THE THIRD GRADE OF SMK PAB 3 MEDAN ESTATE

2015 ◽  
Vol 4 (2) ◽  
Author(s):  
Meryanti Napitupulu And Anni Holila Pulungan
Keyword(s):  
High School ◽  
Control Group ◽  
Vocational High School ◽  
Control Groups ◽  
Speaking Test ◽  
The Third ◽  
Speaking Skill ◽  
The Subject ◽  
And Control ◽  
Experimental Group

This study was conducted as an attempt to discover the effect of applying Demonstration Method on students’ achievement in speaking skill. It was an experimental research. The subject was students of Grade XII, Vocational High School (Sekolah Menengah Kejuruan: SMK), which consisted of 79 students. The research was divided into two groups: experimental and control groups. The instrument used to collect the data was speaking test. To obtain the reliability of the test, the writer applied Kuder Richardson 21 formula. The result of the reliability was 0.7, and it was found that the test was reliable. The data were analyzed by using t-test formula. The analysis showed that the scores of the students in the experimental group were significantly higher than the scores of the students in the control group at the level of significant m = 0.05 with the degree of freedom (df) 77, t-observed value 8.9 > t-table value 1.99. The findings indicate that using Demonstration Method significantly affected the students’ achievement in speaking skill. So, English teachers are suggested to use Demonstration Method in order to improve students’ achievement in speaking skill.

scholarly journals Comparison of Urinary Iodine, Urinary Arsenic, Radioiodine Uptake, Thyroid Stimulating Hormone (TSH) and Free Thyroxin (FT4) Levels, Between Experimental Group with Simple Diffuse Goiter and Control Group

1970 ◽  
Vol 7 (1) ◽  
pp. 89-98 ◽  
Author(s):  
Md Sharif Hossain ◽  
Fatema Begum
Keyword(s):  
Urinary Iodine ◽  
Thyroid Stimulating Hormone ◽  
Control Group ◽  
Control Groups ◽  
Arsenic Level ◽  
Radioiodine Uptake ◽  
Urinary Arsenic ◽  
Diffuse Goiter ◽  
And Control ◽  
Experimental Group

In Bangladesh some researchers have done several studies to find the correlation of simple diffuse goiter with arsenic level but no one conducted any study to find the differences of urinary iodine, urinary arsenic, radioiodine uptake, the thyroid stimulating hormone (TSH) and free thyroxin (FT4) levels between goitrous and non goitrous. That is why, in this research an attempt has been made to compare the urinary iodine, urinary arsenic, radioiodine uptake, TSH and FT4 levels between experimental group with simple diffuse goiter and healthy control group. In this study another purpose has also been made to find the associations between different pairs of variables for both experimental and control group. In this study we have tried to find the impacts of arsenic level on simple diffuse goiter. This is a case-control analytical study. The study is carried out in the Institute of Nuclear Medicine and Ultrasound, in collaboration with the thyroid out patient department of Bangabandhu Sheikh Mujib Medical University. A total of eighty five (85) subjects are included in the study. Among the 85 subjects, a sample of forty five is considered for experimental group with simple diffuse goiter and another sample of forty is considered for healthy control group without any thyroid disease. From the experimental results it has been found that, the arsenic levels, FT4 and radioiodine uptake levels at 2 hours between the experimental and control groups are significantly different but the urinary iodine levels, TSH levels and radioiodine uptake levels at 24 hours between the experimental and control groups are not statistically different. From the experimental results it has also been found that there is significant differentiation between experimental and controls groups in respect of association between different pairs of variables. In this study, another significant finding is that iodine deficiency is not only the factor of causing simple diffuse goiter, but arsenic level is also one of the most important factor of causing simple diffuse goiter. Key words: Iodine deficiency, Simple diffuse goiter, Urinary arsenic, Statistical analysis, Association, Experimental and Control groups  DOI = 10.3329/dujps.v7i1.1224 Dhaka Univ. J. Pharm. Sci. 7(1): 89-98, 2008 (June)

scholarly journals The Effects of Dora the Explorer on Preschool Children's Spatial Concept Acquisition and Spatial Ability

2017 ◽  
Vol 13 (1) ◽  
pp. 39
Author(s):  
Duriye Esra Angın
Keyword(s):  
Spatial Ability ◽  
Spatial Abilities ◽  
Control Group ◽  
Group Model ◽  
Meaningful Difference ◽  
Control Groups ◽  
Spatial Concept ◽  
Post Test ◽  
And Control ◽  
Experimental Group

The purpose of this research is to investigate the effects of Dora the Explorer cartoon on the spatial concept acquisitions and spatial abilities of the preschool children. The study was carried out with 80, 60-71 month old children attending preschools. Post-test only control group model is used in the research in order to identify the existing phenomena in a controlled manner. “The Bracken Basic Concept Scale, Third Edition: Receptive (BBCSIII:R) Form Direction/Position Subscale” and two different “Spatial Ability Games” were used to assess children’s spatial concept acquisitions and spatial abilities. Independent sample t-test was used in order to compare the average of post-test scores of the children in the experimental and control groups. According to the findings, it is found that there is meaningful difference between scores of post-tests of direction/position subscale and spatial ability games score. Comparing the scores of post-test of direction/position subscale and spatial ability games of experimental and control groups, it was found that there was a meaningful differentiation in favor of experimental group.

scholarly journals THE EFFECT OF DEFINITIONS TOWARD STUDENTS’ VOCABULARY

2018 ◽  
Vol 6 (1) ◽  
pp. 34
Author(s):  
Tawali Tawali
Keyword(s):  
Experimental Study ◽  
Alternative Hypothesis ◽  
T Test ◽  
Second Grade ◽  
Control Group ◽  
Second Grade Students ◽  
Post Test ◽  
The Subject ◽  
And Control ◽  
Experimental Group

This research is aimed to find out the effect of definitions toward students’ vocabulary mastery: it was an experimental study at the second grade student of MTs NW Haqqul Yaqin Sayang- sayang. The subject of this research was the second grade of MTs NW Haqqul Yaqin Sayang- sayang.The research was used experimental method with quantitative approach. The population of this research consist of 55 students, and the sample is 29 for experimental group while 26 for control group. The technique of collecting data was used definition for experimental group and matching word with antonym for control group. The data was collected by using post-test only and the data was analyzed by t-test formula. Based on data analysis the mean score of experimental group was 76,4 and control group was 69,23, beside of that standard deviation for experimental group was 114,28 and for control group was 113,09 and the value of t-test was 2,44 and t-table was 2,000. Degree of freedom is 53 with significant level 0,05. It means that the value of t-test was higher than t-table (t-test ˃ t-table). The alternative hypothesis (Ha) was accepted and null hypothesis (Ho) was rejected. Thus, the conclusion of this research was there was an effect of definition toward students’ vocabulary mastery: an experimental study at the second grade students of MTs NW Haqqul Yaqin Sayang-sayang.

scholarly journals The effect of peripheral learning on elementary EFL learners’ grammar improvement: The case of prepositions of time and place

2018 ◽  
Vol 7 (2) ◽  
pp. 91-100
Author(s):  
Islam Namazian Doost ◽  
Soheila Tahmasbi
Keyword(s):  
T Test ◽  
Control Group ◽  
Control Groups ◽  
Teaching Environment ◽  
Learning Abilities ◽  
Efl Learners ◽  
Post Test ◽  
Elementary Classes ◽  
And Control ◽  
Experimental Group

This study aims to investigate the possible effects of peripheral learning on elementary EFL learners’ grammar improvement: the case of prepositions of time and place. Two elementary classes were selected as experimental and control groups. Before beginning the treatment, a grammar test was administered to both the groups as a pre-test. Then, as treatment, the experimental group was exposed to realia, pictures, posters and texts, while the control group was not. After term-long treatment of 10 weeks, the two groups received the same grammar test as post-test. The results of t-test showed that the experimental group improved their grammar ability, i.e., knowledge of prepositions of time and place more than their friends in the control group. The finding of the study may open an optional path for teachers to include some peripheral materials in their teaching environment to further invest on unconscious learning abilities of the students.   Keywords: Peripheral learning, reposition of time, prepositions of place, grammar.

scholarly journals A STUDY OF THE EFFECT OF THE PHYTOCHEMICAL CONTENT OF P. AMERICANALEAF ON HEMATOLOGICAL SYSTEM OF ALBINO RATS

2021 ◽  
Vol 9 (04) ◽  
pp. 464-467
Author(s):  
Ngozi a ◽  
◽  
N. Omeke ◽  
Haruna M. Ndahi ◽  
◽  
...  
Keyword(s):  
Adverse Effect ◽  
Experimental Study ◽  
Aqueous Extract ◽  
Leaf Extract ◽  
Control Group ◽  
Albino Rats ◽  
Phytochemical Content ◽  
Other Substances ◽  
And Control ◽  
Experimental Group

Given the medicinal importance of the avocado plant in alternative medicine,the present study aimed to study the effect of the phytochemical content of P. americana leaf extract on the hematological system of albino rats. Albino rats were obtained andclustered into sixgroups,with five rats per groupsimultaneously were assigned experimental and control. The rats in the experimental group were administered with varying doses of the prepared aqueous extract of P. americanawithin the period of the study. The rats in the control group were administered with other substances such as water and feed for the study period.The hematological system of the experimental animal was assessed after the administration of the extract, and it was observed that the aqueous extract of P. americana leaf recorded no significant adverse effect on the hematology system of the experimental study animal.

scholarly journals USING SOCIOGRAM TO IMPROVE THE WRITING AND SPEAKING ACHIEVEMENTS OF THE EIGHT GRADE STUDENTS OF SMPN 1 JARAI

2019 ◽  
Vol 2 (2) ◽  
pp. 269
Author(s):  
Yoga Pratama
Keyword(s):  
Eighth Grade ◽  
Control Group ◽  
Control Groups ◽  
Control Group Design ◽  
Significant Difference ◽  
Eighth Grade Students ◽  
Post Test ◽  
And Control ◽  
Experimental Group ◽  
Test Control

The objectives of this study were to find out whether or not there was significant improvement in writing and speaking achievements of the eighth grade students of SMPN1 Jarai after they were taught by using Sociogram, to find out whether or not there was significant improvement in each aspect of writing and speaking achievements of the eighth grade students of SMPN1 Jarai after they were taught by using Sociogram, to find out whether or not there was significant difference in writing and speaking achievements between the eighth grade students of SMP 1 Jarai who were taught by using Sociogram and those who were not, and to find out the perception of the eighth grade students of SMPN 1 Jarai after they were taught by using Socoiogram. In this paper, an experimental research method with pre and post test control group design was used with 70 students as the sample divided into two groups, experimental and control group. However, only the students of the experimental group were taught by using Sociogram. The obtained data were analyzed by using t-test. The students were given questionnaire to know their perceptions. The result showed that there was a significant difference in both students? writing and speaking achievements after they were tought by using Sociogram. Furthermore, it was found that there was a significant difference in students? writing and speaking achievement between the experimental and control groups. In conclusion, Sociogram improves the students? writing and speaking achievements.

scholarly journals Effectiveness of using a role playing strategy in developing dialogue skills in a language subject for students in the third grade intermediate in Hafr Al-Batin: فاعلية استخدام استراتيجية لعب الأدوار في تنمية مهارات الحوار في مادة لغتي لدى طلاب الصف الثالث المتوسط بحفر الباطن

2017 ◽  
Vol 1 (4) ◽  
Author(s):  
Mohammed bin Majed bin Shariah al - Shammari
Keyword(s):  
Role Playing ◽  
Self Esteem ◽  
Third Grade ◽  
Control Group ◽  
Control Groups ◽  
Teaching Role ◽  
Third Grade Students ◽  
The Mean ◽  
And Control ◽  
Experimental Group

The aim of this study was to identify the effectiveness of teaching role playing strategy in developing dialogue skills in the immortal language of the intermediate third grade students. To achieve the objectives of the study, the researcher used the semi-experimental method by designing the two equal groups. The sample contains 51 students, 26 students for the control group and 25 students for the experimental group. The researcher used the statistical treatments using the SPSS program, The study has resulted in The results showed that the level of dialogue skills on the student scale among the average third-grade students in the experimental and control groups was medium. The mean of the two groups was on all dialogue skills (2.23). The skill of expressing the opinion is one of the most common dialogue skills, (2.25), while the skill of listening and listening is second, with an average of (2.24), followed by self-esteem in third place with an average of 2.23. Finally, ). In addition, there were statistically significant differences at the level of α 0.05 0.05 in post-performance in all dialogue skills (self-esteem, good listening and listening, respect for others, expression of opinion). In the light of its findings, the researcher made a number of recommendations.

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