Seyed Esmail Torabi, Hadi Keramati, Javad Kavosian, Hasan Rastegarpoor, Goodarz Alibakhshi,
Volume 9, Issue 4 (volume9, Issue 4 2022)
Abstract
The present study was conducted with the aim of the effects of segmentation and redundancy methods on cognitive load and vocabulary learning and comprehension of English lessons in a multimedia learning environment.The purpose of this study is an applied research and a real experimental study. The statistical population of the present study includes all people aged 14 to 16 who are enrolled in language schools in Damghan. The subject of the educational content was to explain the activity of volcanoes in the form of PowerPoint software in a maximum of 10 slides (based on the type of group) to 90 subjects who were randomly divided into six groups (15 people in each group). High segmentation / Audio presentation, High segmentation / Visual presentation, High segmentation / Redundant, Low segmentation / Audio presentation, Low segmentation / Visual presentation, Low segmentation / Redundant were assigned. The research was completely experimental (a completely random 2×3 factor design). Researcher-made test of vocabulary and comprehension learning, prior knowledge assessment and Pass Cognitive Load Scale (1992) were used to collect data. Analysis of variance was used to analyze the data.The results of analysis of variance showed that the interaction between segmentation method and redundancy method on cognitive load and learning was significant. The results of post hoc test also showed that the High segmentation / Visual presentation group reported significantly lower cognitive load and higher vocabulary and comprehension compared to other groups. According to the obtained results, it can be said that segmentation and redundancy methods are effective in reducing cognitive load and promoting English language learning in a multimedia learning environment.
Mohsen Jalali, Amineh Khedmati Nojeh Deh Sadat, Ahmad Torabi, Maryam Naderi,
Volume 12, Issue 2 (Volume12, Issue 2 2024)
Abstract
HIV is associated with extensive physical and psychological consequences, significantly affecting the quality of life of patients. Cognitive rehabilitation is a novel intervention aimed at improving cognitive and psychological functioning in these individuals. The present study aimed to evaluate the effectiveness of cognitive rehabilitation intervention on reducing depression, improving working memory, and enhancing attention in patients with immune deficiency. This quasi-experimental study utilized a pretest-posttest control group design and was conducted in Izeh, Iran, in 2023. A total of 30 patients with HIV were selected through purposive sampling and randomly assigned to experimental and control groups (15 participants per group). Instruments included the Beck Depression Inventory, Working Memory Assessment, and Continuous Performance Test to measure attention. The experimental group underwent 12 sessions of cognitive rehabilitation (60 minutes each, three times a week), while the control group received no intervention. Posttests were administered to both groups after the intervention. Data were analyzed using multivariate covariance analysis (MANCOVA) in SPSS.23. The results showed that cognitive rehabilitation significantly reduced depression and improved working memory and attention in the experimental group compared to the control group (P ≤ 0.001). These findings suggest that cognitive rehabilitation is an effective approach for enhancing cognitive and psychological outcomes in patients with immune deficiency and can be utilized in therapeutic settings.
