Exploring the necessary conditions for observing interleaved practice benefits in math learning

Previous research has demonstrated benefits of interleaved practice over blocked practice for learning mathematical formulas. This experiment tested whether the benefits from interleaved practice would generalize to more complex problems, where the problem type must be inferred from information in the problem. We compared delayed test performance of participants assigned to blocked practice to participants assigned to interleaved practice who had high or low practice performance. University students (M_age = 18.97, SD_age = 1.50, 64% female) learned how to solve probability word problems in blocked practice, interleaved practice, or hybrid conditions that included both kinds of practice. Conditions that included some interleaved practice outperformed a condition that included only blocked practice at delayed test. Participants with high performance on interleaved practice problems outperformed participants assigned to blocked practice at delayed test. These results suggest that interleaved practice can confer learning advantages even for more complex problems.     

Developing experience-based (tacit) knowledge through reflection

This investigation examined the effectiveness of reflection methods derived from Sternberg's theory of practical intelligence [Sternberg, R.J., and Hedlund, J. (2002). Practical intelligence, g, and work psychology. Human Performance 15(1/2), 143–160.; Sternberg, R.J., Forsythe, G.B., Hedlund, J., Horvath, H.A., Wagner, R.K., Williams, W.M., et al. (2000). Practical intelligence in everyday life. New York: Cambridge University Press. 2000] on the acquisition of experience-based, tacit knowledge. Two related experimental studies were conducted to test the effect of brief tacit-knowledge reflection training on practical problem solving. Reflection methods were developed based on Sternberg's conceptualized condition–action structure of tacit knowledge. In the first study, 101 U.S. Army officers participated in a reflection intervention or practice control. Results showed an effect of reflection condition on post-test tacit-knowledge scores (F [3, 91] = 3.74, p = .01, 2 = .03). In the second study, 235 college students participated in a reflection intervention or an academic-type reflection control. Results showed that the reflection condition approached significance on post-test scores (F [1, 233] = 3.47, p = .06, p = .06, 2 = .01). The investigation suggests this line of inquiry warrants continued study.     

The effects of affective pedagogical agent in multimedia learning environments: A meta-analysis

Affective pedagogical agent (PA) is an image of a character embedded in multimedia lessons with the ability to influence learners' affective experiences and learning performance. Prior studies on the effects of affective PA have shown inconsistent findings. In this study, we conducted four separate meta-analyses to address whether adding an affective PA to multimedia lessons can increase learners' retention performance, transfer performance, positive emotions, and intrinsic motivation, and to explore several moderators that may have contributed to the inconsistencies of previous studies. The research framework mainly includes introducing the concept of affective PA, reviewing research on the impact of affective PA on learning performance, emotions, and motivation, analyzing the moderators that may affect the effects of affective PA, performing a meta-analysis, and discussing the results based on the findings of the meta-analysis. We found 36 articles met the inclusion criteria. The results of the meta-analysis indicated that affective PA could increase learners’ positive emotions (k = 25, g = 0.26), improve intrinsic motivation (k = 26, g = 0.26), and facilitate learning performance (retention: k = 35, g = 0.26; transfer: k = 45, g = 0.34). Furthermore, moderator analysis found that affective PA characteristics (i.e., appearance, the number of emotional cues, and body movement) and learning materials characteristics (i.e., subject domain, pacing of presentation) moderated the effects of affective PA. We discussed these findings from different theoretical perspectives. In general, affective PA could help students be happier and more motivated to learn in multimedia learning environments.     

Better together: Effects of four self-efficacy-building strategies on online statistical learning

The goal of this study is to test the individual and combined effects of supplementing an online statistics lesson with four motivational strategies corresponding to Bandura’s (1997) four sources of self-efficacy (anxiety coping, modeling, mental practice, and effort feedback) on cognitive, motivational, and affective outcomes. Internet participants (N = 279) completed an online statistics module in one of six conditions with one or all four self-efficacy-building strategies (5 treatment conditions) or none of these strategies (control condition). The results indicated that the four strategies worked effectively in combination, significantly improving transfer test scores (d = 0.608), increasing self-efficacy ratings (d = 0.696), and reducing task anxiety ratings (d = −0.534), as compared with the control condition. By contrast, no motivational strategy alone was effective. The results suggest the importance of taking advantage of the power of all four sources of self-efficacy information in combination when designing motivational interventions for online mathematical lessons.     

Supporting the self-regulated use of retrieval practice: A higher education classroom experiment

This study investigated whether an instructional intervention can increase students’ self-regulated use of retrieval practice in a higher education classroom environment. A lab-experiment by Ariel and Karpicke (2017) revealed that strategy instructions improved students’ self-regulated use of retrieval practice and subsequent test performance. Our goal was to determine whether these effects generalize to a classroom environment using key concepts from marketing communication. We compared two groups on their self-regulated use of retrieval practice using an online environment. An experimental group (n = 58) received strategy instructions on retrieval practice and a control group (n = 58) received neutral instructions. Instructions were provided during sessions 1 and 2; no instructions were provided in a third, transfer session, measuring self-regulated use of retrieval practice. In sessions 1 and 2, no significant differences between groups were found. In the transfer session, the experimental group tested themselves more (Hypothesis 1) and displayed a larger number of (correct) retrieval attempts per key concept (Hypothesis 2) than the control group. No correlations were found with performance (Hypothesis 3). With our experiment, we took a first step in supporting students in their self-regulated use of retrieval practice in a classroom environment with complex materials.     

The effects of robot-assisted language learning: A meta-analysis

Given the importance of learner–interlocutor interactions, social robots have received considerable attention in the field of language learning, as this technology can physically accompany learners, is equipped with common social behaviors, and can effectively communicate with learners for language acquisition. In line with the continuous efforts to examine the effects of using social robots in language learning, this study is a meta-analysis aiming to integrate the findings of previous experimental studies on robot-assisted language learning (RALL), focusing on language learning achievement. To this end, we selected 12 independent samples (N = 522) from the initial pool of 16 empirical studies—including 23 independent samples (N = 1147)—and computed effect sizes along with their standard errors. The results indicated that RALL had a medium-sized average effect (d = 0.59, SE = 0.09, 95% CI: 0.41–0.76) compared to non-RALL conditions, such as traditional learning conditions without technology (e.g., teacher-only) or other technology-mediated conditions (e.g., virtual agents and tablet PCs). We further identified several moderator variables (i.e., age group, target language, language domain, robots’ role, interaction type, type of non-RALL condition), and provided an in-depth discussion on how these variables were related to the effectiveness of using robots for language learning.     

The effect of blended learning on student performance at course-level in higher education: A meta-analysis

The present paper analyzes the impact of blended learning (BL) on the academic achievement of higher education students. A meta-analysis (k = 51 effect sizes) was conducted to perform a statistical synthesis of studies contrasting student performance in BL conditions with traditional classroom instruction. We include disciplines and instructors’ end-of-course evaluation method as moderating variables. The results show that BL demonstrates a small summary effect (g⁺ = 0.385, p < 0.001) compared to traditional teaching methods A significantly higher mean effect size was found in STEM disciplines (g⁺ = 0.496) compared to that of non-STEM disciplines (g⁺ = 0.210). Nevertheless, the weighted mean effect sizes reveal no significant differences regarding of end-of-course assessment methods, namely one-moment and multiple-component assessment. The finding confirms that BL is significantly associated with greater learning performance of STEM-disciplined students than with traditional classroom practice. Accordingly, discussion concerning the findings and implications for future research are elaborated.     

Impact of programming on primary mathematics learning

The aim of this study is to investigate whether a programming activity might serve as a learning vehicle for mathematics acquisition in grades four and five. For this purpose, the effects of a programming activity, an essential component of computational thinking, were evaluated on learning outcomes of three mathematical notions: Euclidean division (N = 1,880), additive decomposition (N = 1,763) and fractions (N = 644). Classes were randomly assigned to the programming (with Scratch) and control conditions. Multilevel analyses indicate negative effects (effect size range −0.16 to −0.21) of the programming condition for the three mathematical notions. A potential explanation of these results is the difficulties in the transfer of learning from programming to mathematics.     

Effects of explicit rules in learning to spell open- and closed-syllable words

Second graders (N = 222; 7.7 years of age) practiced with open- and closed-syllable words in a computer-assisted training program and appropriate spelling rules were either explicitly provided during practice or not. Also, children practiced either with a small set of exemplars or with a large set; the latter condition was expected to promote the use of rules. A control group consisting of 209 second graders, who did not practice in the computer-assisted training program, was also included in the study. Learning effects of practice were established by testing the spelling of practiced words, as well as novel transfer words, in pre-, post-, and retention tests. The results in the posttest showed that with a large set of exemplars during practice explicitly provided spelling rules are supportive for learning to spell novel words but no further effects of explicit rules were found, either for practiced words or in the retention test.     

Frequency,efficiency and flexibility of indirect addition in two learning environments

This study examined the development of indirect addition as an alternative for solving multidigit subtractions, by means of two learning environments in traditionally schooled third-graders in Flanders (Belgium). Thirty-five third-graders, who did not demonstrate mastery of indirect addition, participated in an Explicit (n = 20) or Implicit (n = 15) learning environment that aimed to encourage the development of indirect addition. Over a period of six weeks, children participated in nine individual sessions: four practice sessions, three test sessions, one transfer session, and one retention session. The results revealed that throughout the study indirect addition was rarely used, even by the children in the explicit learning environment. However, when indirect addition was used, it was executed very efficiently.     

Learning from direct instruction: Best prepared by several self-regulated or guided invention activities?

Learning from direct instruction can be enhanced by preparatory invention tasks: students invent an index that allows to differentiate a set of cases regarding important aspects (self-regulated). However, contradictory results have been found. As self-regulated activities often need practice, we tested whether the contradictory findings persist when students can practice inventing. We randomly assigned 99 eighth-grade students to two conditions (independent variable): they either invented twice (self-regulated; n = 49) or worked through worked solutions of the two tasks (guided; n = 50) before learning about ratios in physics from a lecture. Extraneous load, deep-structure recall, knowledge-gap perception, and self-efficacy were potential mediators. Transfer was the dependent measure. Guidance led to less extraneous load. However, self-regulation led to higher transfer because the students devoted more attention to the deep structure of the preparation tasks. Our findings suggest that—given some practice—self-regulated outperforms guided preparation for learning from direct instruction.     

Signaling text-picture relations in multimedia learning: A comprehensive meta-analysis

The signaling principle recommends emphasizing relevant aspects of a multimedia message by means of signals (e.g., color coding). We determined the effectiveness of signals that highlight correspondences between text and pictures as well as possible boundary conditions by means of a meta-analysis. To this end, 58 potentially relevant articles were identified in a comprehensive search. After rating the studies based on inclusion criteria and correcting for biases, 27 studies were included in the meta-analysis yielding 45 pairwise comparisons with N = 2464 participants. Domain-specific prior knowledge, pacing of the materials, pictorial format, mapping requirements, and distinctiveness of signals were coded as moderators. For transfer and comprehension performance a positive small-to-medium effect size (r = .17, 95% CI [0.11, 0.22]) favoring signaled multimedia material was found, which was moderated by prior knowledge. The findings support the effectiveness of the signaling principle in particular for learners with low prior knowledge.     

Exposure to violence in childhood is associated with higher body mass index in adolescence

To determine whether different types of childhood adversity are associated with body mass index (BMI) in adolescence, we studied 147 adolescents aged 13–17 years, 41% of whom reported exposure to at least one adversity (maltreatment, abuse, peer victimization, or witness to community or domestic violence). We examined associations between adversity type and age- and sex-specific BMI z-scores using linear regression and overweight and obese status using logistic regression. We adjusted for potential socio-demographic, behavioral, and psychological confounders and tested for effect modification by gender. Adolescents with a history of sexual abuse, emotional abuse, or peer victimization did not have significantly different BMI z-scores than those without exposure (p > 0.05 for all comparisons). BMI z-scores were higher in adolescents who had experienced physical abuse (β = 0.50, 95% CI 0.12–0.91) or witnessed domestic violence (β = 0.85, 95% CI 0.30–1.40). Participants who witnessed domestic violence had almost 6 times the odds of being overweight or obese (95% CI: 1.09–30.7), even after adjustment for potential confounders. No gender-by-adversity interactions were found. Exposure to violence in childhood is associated with higher adolescent BMI. This finding highlights the importance of screening for violence in pediatric practice and providing obesity prevention counseling for youth.     

Effects of creating video-based modeling examples on learning and transfer

Two experiments investigated whether acting as a peer model for a video-based modeling example, which entails studying a text with the intention to explain it to others and then actually explaining it on video, would foster learning and transfer. In both experiments, novices were instructed to study a text, either with the intention of being able to complete a test (condition A), or being able to explain the content to others (condition B and C). Moreover, students in condition C actually had to explain the text by creating a webcam-video. In Experiment 1 (N = 76 secondary education students) there was no effect of study intention on learning (A = B), but explaining during video creation significantly fostered transfer performance (C > B; C > A). In Experiment 2 (N = 95 university students), study intention did have an effect on learning (C > A; B > A), but only actual video creation significantly fostered transfer performance (C > A).     

Child sexual abuse research knowledge among child abuse professionals and laypersons

The purposes of this study were to: (1) Assess child abuse professionals’ and nonprofessionals’ knowledge of scientific research findings that are relevant to forensic child sexual abuse (CSA) evaluations and (2) describe associations between child abuse professionals’ levels of research knowledge and their education and experience. An 18-item multiple-choice test was administered to 188 child abuse professionals and 457 nonprofessionals (undergraduate college students) in Brazil and the United States. The nonprofessionals’ average percent correct, M = 44%, was not significantly different than what would be expected for random guessing (45%). The professionals’ average percent correct, M = 55%, was higher than that of nonprofessionals and random guessing (both ps < .001). The average percent correct score for the US-sample psychologists, M = 76%, was higher than the average score of the other professionals, M = 51%, p < .001. Professionals’ educational level, as measured by the highest academic degree obtained, was positively associated with percent correct scores, Spearman's ρ = .46, p < .001. Controlling for educational attainment, professional experience, as measured by the total number of CSA evaluations performed, was weakly associated with percent correct scores, partial r = .15, p = .04. Percent correct scores were low for both nonprofessionals and professionals. Most of the participants in this study were uninformed or misinformed about scientific research findings that are important for conducting optimal forensic CSA evaluations and for making accurate judgments about the validity of sexual abuse allegations.     

Comparing two whole task patient simulations for two different dental education topics

We investigated the effect of two types of whole task patient simulations, role-play and web-based, on learning outcomes for two topics, local anesthesia and non-surgical extractions, in a foundational oral maxillofacial surgery course for second year pre-clinical dental students. Using a 2x2 factorial design, we asked which simulation model allows for deeper cognitive engagement that fosters higher learning outcomes for novices practicing complex skills as a professional, a collaborative role-play simulation (Role-Play Sim), or an individually-paced web-based simulation (Web Sim)? In two studies covering two different topics, we compared the effect of these simulations on 50-item multiple-choice knowledge tests. Participants were randomly assigned to one of four groups: No Sim, Web Sim, Role-Play Sim, or Both Sims. For study 1 covering local anesthesia, there was a statistically significant main effect for the Role-Play Sim, F (1, 105) = 103.804, p < 0.001, η_p² = 0.497, but not for the Web Sim, F (1, 105) = 1.655, p = 0.201. Similarly, for study 2 covering extractions, there was a statistically significant main effect for the Role-Play Sim, F (1, 108) = 162.362, p < 0.001, η_p² = 0.601, but not for the Web Sim, F (1, 108) = 0.072, p = 0.798. The interaction term was not statistically significant in either study. Results suggest that role-play simulations achieved a higher level of learning outcomes than the web-based patient simulation.     

Maturation of consonant perception,but not vowel perception,predicts lexical skills at 12 months

Consonants and vowels differentially contribute to lexical acquisition. From 8 months on, infants' preferential reliance on consonants has been shown to predict their lexical outcome. Here, the predictive value of German-learning infants' (n = 58, 29 girls, 29 boys) trajectories of consonant and vowel perception, indicated by the electrophysiological mismatch response, across 2, 6, and 10 months for later lexical acquisition was studied. The consonant-perception trajectory from 2 to 6 months (β = −2.95) and 6 to 10 months (β = −.91), but not the vowel-perception trajectory, significantly predicted receptive vocabulary at 12 months. These results reveal an earlier predictive value of consonant perception for word learning than previously found, and a particular role of the longitudinal maturation of this skill in lexical acquisition.     

Professional development of teachers in the implementation of a strategy-focused writing intervention program for elementary students

In this study we examined the effectiveness of Tekster [Texter], a comprehensive program for writing for the upper elementary grades, combining strategy instruction, text structure instruction, and the teaching of self-regulation skills with observational learning, explicit instruction, and (guided) practice to address both the focus of instruction (what is taught) and the mode of instruction (how it is taught). Further, we investigated the added value of a professional development program for teachers on the effectiveness and implementation of the intervention in the classroom, by adopting a teachers-training-teachers approach. One group of teachers (N = 31) was trained by experts, and subsequently trained their colleagues (N = 37). Quasi-experimental results showed that students’ writing performance improved after the intervention (ES = 0.55), while generalizing over tasks, students, and teachers. Further, teachers became more positive and felt more efficacious about teaching writing after the intervention. There were no differences between trainers and trainees, which provides evidence for the spillover effect of professional development. To get more insight in how teachers implemented the intervention in their classroom and in the social validity of the intervention and the teachers-training-teachers approach, we triangulated post-intervention questionnaires with classroom observations and interviews. This mixed methods approach revealed that both trainers and trainees were highly satisfied with the program and easily adapted their focus of instruction. However, for adjusting the mode of instruction more teacher support seems to be needed.     

History of sexual abuse and suicide attempts in alcohol-dependent patients

History of child abuse is considered one of the important risk factors of suicide attempt in general population. At the same time it has been shown that suicide attempts appear significantly more frequently in alcoholics than in healthy individuals. The objective of this study was to investigate associations between history of childhood sexual abuse and suicide attempts in a sample of Polish alcohol dependent patients. A sample of 364 alcohol-dependent subjects was recruited in alcohol treatment centers in Warsaw, Poland. Information was obtained about demographics, family history of psychiatric problems, history of suicide attempts, sexual and physical abuse during childhood and adulthood and severity of alcohol problems. When analyzed by gender, 7.4% of male and 39.2% of female patients had a lifetime history of sexual abuse; 31.9% of the study group reported at least one suicide attempt during their lifetime. Patients who reported suicide attempts were significantly younger (p = 0.0008), had greater severity of alcohol dependence (p = 0.0002), lower social support (p = 0.003), and worse economic status (p = 0.002). Moreover, there was a significant association between history of suicide attempts and family history of psychiatric problems (p = 0.00025), suicide attempts in the family (p = 0.0073), childhood history of sexual abuse (p = 0.009) as well as childhood history of physical abuse (p = 0.002). When entered into linear regression analysis with other dependent variables history of childhood sexual abuse remained a significant predictor of suicide attempt (OR = 2.52; p = 0.035). Lifetime experience of sexual abuse is a significant and independent risk factor of suicide attempts in alcohol-dependent individuals.     

Influence of grade level on perceptual learning style preferences and language learning strategies of Taiwanese English as a foreign language learners

The purpose of this study was to investigate relationships between grade level, perceptual learning style preferences, and language learning strategies among Taiwanese English as a Foreign Language (EFL) students in grades 7 through 9. Three hundred and ninety junior high school students participated in this study. The instruments for data collection were the Perceptual Learning Style Preference Questionnaire (PLSPQ) and the Strategy Inventory for Language Learning (SILL). Results showed that statistically significant relationships were found to exist between grade level and kinesthetic learning style preference (p = .001), tactile learning style preference (p = .047), and individual learning style preference (p = .02). Results also showed that statistically significant relationships were found to exist between grade level and the use of memory strategies (p = .005), cognitive strategies (p = .02), metacognitive strategies (p = .000), affective strategies (p = .000) and social strategies (p = .000). Implications are that it is critical for classroom teachers to be more aware of the differences in their students and ensure that their courses present information that appeal to students in different grade levels.