A meta-analysis of how signaling affects learning with media
Publication date: Available online 23 November 2017 Source:Educational Research Review Author(s): Sascha Schneider, Maik Beege, Steve Nebel, Günter Daniel Rey The signaling effect states that learners profit from cues that highlight the organization of specific relevant information within materials. This meta-analysis includes 103 studies and N = 12,201 participants. 139 retention and 70 transfer performance measures were used to determine separate mean effect sizes. Cognitive load, motivation/affect, learning time, and eye-tracking data were included as dependent variables to explain possible effect mechanisms. Additionally, nine possible moderators (e.g., type of signaling) were identified. The retention (g+ = 0.53, 95% CI [0.42, 0.64]) and transfer (g+ = 0.33, 95% CI [0.22, 0.43]) sizes support the positive effect of signaling on motivation/affect, learning time, and learning-relevant fixations. Cognitive load was significantly reduced. In contrast to the expertise reversal effect hypothesis, prior knowledge was not identified as a moderator of the signaling effect. The results were interpreted using media learning theories. Recommendations for future studies are included herein.
Authors: Braga ACM, Pinto A, Pinto S, de Carvalho M Abstract Introduction: The efficacy of cardiopulmonary exercise testing (CPET) to determining exercise intensity has not been established in Amyotrophic Lateral Sclerosis (ALS). We studied this intervention. Methods: We included 48 ALS patients randomized in 2 groups: G1 (n = 24), exercise intensity leveled by CPET; G2 (n = 24), standard care limited by fatigue, during 6 months. ALS functional scale (ALSFRS-R) and forced vital capacity (FVC) were performed every 3 months; CPET was done at admission (T1) and 6 months later (T2). We registered oxygen uptake, car...
Authors: Alanazy MH, Barakeh RB, Asiri A, Edrees MF, Abuzinadah AR, Aljafen BN, Muayqil T Abstract Only a small fraction of patients with acute ischemic stroke receive intravenous thrombolysis (IVT). We sought to assess barriers and practice patterns in using IVT for acute ischemic stroke among neurologists in Saudi Arabia. An electronic survey was sent to all neurologists registered with the Saudi Commission for Health Specialties. A total of 148 (77.5%) neurologists responded. The most common reported barriers for IVT administration were delayed presentation to hospitals (82.4%) and unclear time of symptom onset ...
Helena Wang talks to Peng Gong aboutThe Lancet-Tsinghua Healthy Cities Commission, what needs to be done to evaluate the progress and promote healthy cities in China. This podcast is in Chinese.
Authors: PMID: 29667450 [PubMed - as supplied by publisher]