Cognitive load theory uses the immense size of human long-term memory and the significantly limited capacity of working memory to design instructional methods. Five basic principles: information store principle, borrowing and reorganizing principle, randomness as genesis principle, narrow limits of change principle, and environmental linking and organizing principle explain the cognitive basics of this theory. The theory differentiates between three major types of cognitive load: extraneous load that is caused by instructional strategies, intrinsic cognitive load that results from a high element interactivity material and germane load that is concerned with activities leading to learning. Instructional methods designed in accordance with cognitive load theory rely heavily on the borrowing and reorganizing principle, rather than on the randomness as genesis principle to reduce the imposed cognitive load. As learning fractions incorporates high element interactivity, a high intrinsic cognitive load is imposed. Therefore, learning fractions was studied in the experiments of this thesis. Knowledge held in long-term memory can be used to reduce working memory load via the environmental linking and organizing principle. It can be suggested that if fractions are presented using familiar objects, many of the interacting elements that constitute a fraction might be embedded in stored knowledge and so can be treated as a single element by working memory. Thus, familiar context can be used to reduce cognitive load and so facilitate learning. In a series of randomized, controlled experiments, evidence was found to argue for a contextual effect. The first three experiments of this thesis were designed to test the main hypothesis that presenting students with worked examples concerning fractions would enhance learning if a real-life context was used rather than a geometric context. This hypothesis was tested using both a visual and a word-based format and was supported by the results. The last two experiments were intended to test the context effect using either worked examples or problem solving. The results supported the validity of the previous hypothesis using both instructional methods. Overall, the thesis sheds some light on the advantages of using familiar objects when mastering complex concepts in mathematics.

This research aimed to provide insight into the use and possible value of purpose built multimedia computer software for the study of English Literature. The software in question was developed in light of many years practical experience of teaching English Literature to secondary school students preparing for external examinations and was designed with the aim of improving their knowledge and understanding of particular works of literature. Informed by a critique of the main research findings about ICT use in learning and teaching since the period when computers were introduced into mainstream schools from the 1980s, the empirical research investigated two of the most prominent theoretical and practical perspectives that have been applied to understanding the relationship between educational resources and learning: Learning Styles Theory and Cognitive Load Theory. These two approaches and their associated instrumentation were applied in a quasi-experimental controlled empirical study in four schools in the north-east of England where the multimedia software was used with groups of students embarking on a study of Shakespeare's Macbeth for GCSE examination. Learning Styles theory and the instrumentation used (Kolb's LSI and Honey & Mumford's LSQ) proved less successful than Cognitive Load Theory in demonstrating reliability and validity and therefore in explaining the relationship between different instructional resources and individual learning. The theoretical integrity and usefulness of these two approaches is discussed and, in particular, the rationale behind the continued use of Learning Styles was explored via interview with school faculty who gave reasons of face validity; the pressure from external inspection; the mechanisms through which they were held professionally accountable; senior management and institutional policy; the legacy of initial teacher training; and established classroom practice. Students using the multimedia software demonstrated improvements in their knowledge and understanding of Macbeth equivalent on average to one GCSE grade above those not using the multimedia resource and Cognitive Load Theory was found to be successful in explaining this and in predicting the relationship between instructional resource and the learning gains of individuals. Limitations of the study are drawn along with conclusions for further research and for enhancing teaching and learning with multimedia resources.

The Unified Modeling Language (UML) has quickly become the industry standard for object-oriented software development. It is being widely used in organizations and institutions around the world. However, UML is often found to be too complex for novice systems analysts. Although prior research has identified difficulties novice analysts encounter in learning UML, no viable solution has been proposed to address these difficulties. Sequence-diagram modeling, in particular, has largely been overlooked. The sequence diagram models the behavioral aspects of an object-oriented software system in terms of interactions among its building blocks, i.e. objects and classes. It is one of the most commonly-used UML diagrams in practice. However, there has been little research on sequence-diagram modeling. The current literature scarcely provides effective guidelines for developing a sequence diagram. Such guidelines will be greatly beneficial to novice analysts who, unlike experienced systems analysts, do not possess relevant prior experience to easily learn how to develop a sequence diagram. There is the need for an effective sequence-diagram modeling technique for novices. This dissertation reports a research study that identified novice difficulties in modeling a sequence diagram and proposed a technique called CHOP (CHunking, Ordering, Patterning), which was designed to reduce the cognitive load by addressing the cognitive complexity of sequence-diagram modeling. The CHOP technique was evaluated in a controlled experiment against a technique recommended in a well-known textbook, which was found to be representative of approaches provided in many textbooks as well as practitioner literatures. The results indicated that novice analysts were able to perform better using the CHOP technique. This outcome seems have been enabled by pattern-based heuristics provided by the technique. Meanwhile, novice analysts rated the CHOP technique more useful although not significantly easier to use than the control technique. The study established that the CHOP technique is an effective sequence-diagram modeling technique for novice analysts.

<p>Pilot training and certification have largely remained the same since the Practical Test Standards (PTS) were issued more than twenty years ago by the Federal Aviation Administration (FAA). Within the last several years, the general aviation training sector has acquired the capability to collect and analyze digital data from certain training aircraft. With the implementation of digital information analysis, a more accurate picture of the capabilities of student pilots is possible. These advancements could be used by flight instructors in the assessment process of flight students. With the inclusion of digital data from the aircraft, the cognitive load necessary to make an accurate assessment of a student’s performance could be affected, ideally in a positive manner. Cognitive load researchers typically focus on three aspects to enhance the likelihood of success in learning or task completion. There are three techniques to reduce cognitive load: (a) reduce extraneous load, (b) manage intrinsic load, and (c) optimize germane load (Young, Cate, O’Sullivan, & Irby, 2016). The current research project focused on the impact to the cognitive load of flight instructors who were presented with digital information retrieved from an airplane during their assessment of a student pilot’s aircraft landing competence, endorsement readiness for initial solo, the willingness of the instructor to mentor the student, and how well they liked the student pilot. The study found that a digital condition, when presented alone, created extraneous cognitive load and did not enable flight instructors to accurately rate student landing performance. Additionally, flight instructors were not able to use a combined digital + traditional condition to accurately assess student landing performance. When student performance was on the extreme (i.e. ‘poor’ and ‘good’), flight instructors were better able to determine whether or not a student was ready for a solo endorsement, but instructors did have difficulty distinguishing an ‘average’ student from a ‘good’ performing student. Lastly, all of the conditions presented failed to provide the proper visualizations to allow participants to make assessments of their willingness to mentor the students, and participants indicated that they did not like the students presented with the digital condition. Digital visualizations from aircraft data will require careful development in order to limit the extraneous load and reduce the intrinsic load for student flight assessment, and should be developed in collaboration with flight instructors to provide information to assist the analysis of student flight performance. </p>

Today's world is an interconnected global village. Communication and business transactions are increasingly conducted in non-native languages. Literature suggests that biases are present when communicating in non-native languages; that a truth bias is present in first language communication, and a lie bias in second language communication. Less than 10% of South Africa's population identifies with English, the lingua franca of the country, as a first language. Not much research in the presence of bias in second language communication has been published in the South African multi-lingual context. This study evaluated the presences of bias within deception frameworks such as the Truth Default State and the veracity effect. This study investigated whether deception detection can be improved by modifying the conditions under which statements are given by placing statement providers under cognitive load. The accuracy of veracity judgment language profiling software, LIWC2015, using published deception language profiles was compared against the results of the participating veracity judges. Results of the study were mixed. It was consistent with extant literature in a presence of a truth bias overall, but mixed in terms of a lie bias. The results supported the Truth Default Theory and veracity effect frameworks. LIWC2015 performed marginally better than human judges in evaluating veracity.

Background Meetings are important for organisational functioning and the co-ordination of people, tasks and processes, and an everyday reality of organisational life. As mobile communication technology, such as smart phones, tablets and laptops gets smaller and more powerful, these devices have become more pervasive in every aspect of personal and work life. Increasingly, organisations allow mobile devices to be used during meetings in an effort to be more efficient and save time. However, for a meeting to achieve the desired meeting outcomes, those that participate in the meeting need be actively engaged and focused. It is widely accepted though that mobile communication technology is distracting and can easily draw away one’s focus. This begs the question then as to whether employees should in fact be able to use mobile devices in meetings, or not. Rationale for the research study Research into the effect of mobile communication technology as a source of digital distraction on meeting performance, given individual differences in cognitive processing, is limited. Moreover, no experimental studies could be found that have investigated these relationships. It is hoped that the results of the present study will address the gap that was identified in the literature, as well as provide a useful practical contribution for organisations. The findings of the present study may further be used to inform organisation policy and practice concerning the use of mobile communication technology in meetings. Aim of the research study The aim of the present study was to investigate if the presence of digital distraction in meetings, i.e. the presence of mobile communication technology or mobile devices significantly negatively influences selected cognitive processes (i.e. cognitive load and attention conflict) and ultimately meeting performance (assessed as the time it takes to make a decision; as well as the number and quality of decisions made). Research design and method A two-group post-test only, quasi-experimental research method was utilised to investigate the causal effect of the presence of digital distraction on selected aspects of cognitive processing and meeting performance. For an experiment to be valid, no systematic bias should exist in the comparison groups before the manipulation or intervention, otherwise, one would not be able to deduce that any difference that is observed after the manipulation or intervention was due to the manipulation or intervention. Therefore, to ensure that two equivalent treatment groups were available, individuals were randomly assigned to two meetings. The composition of the two groups was then assessed using the demographic variables that were collected and were not found to be significantly different from one another. The average level concentration performance or attentiveness was also measured and not found to be significantly different. This suggests that the average level of distractibility was the same for the two groups. Two equivalent meetings were held with only the availability of mobile communication technology being different between the meetings (i.e. mobile devices were present and used during the meeting or not). After the meetings were concluded, respondents were asked to complete an online questionnaire that consisted of closed- and openended questions designed to measure the concentration performance, cognitive load and attention conflict constructs. Meeting performance was further evaluated by two independent subject matter experts using a decision-rating scale. Sampling and sample As meetings in organisations was the focus, the study targeted employed individuals, a convenient sample of employees were obtained (n=15) that were randomly assigned to one of two participant groups in two separate meetings. Results The inferential data analyses revealed that cognitive load and attention conflict were both statistically significantly higher in the meeting in which the use of mobile devices were available and used, compared to the meeting in which mobile devices were not present. Moreover, it was found that meeting performance was lower in the meetingwhere mobile communication technology was present. The members of the two meetings made a similar number of decisions, which the independent assessors rated as being of similar quality, however, the group in which mobile communication technology was available took 30 per cent longer (120 versus 90 mins) to come to a similar outcome. Findings The results of the present research study suggest that the presence of digital distraction placed significant (additional) demands on the cognitive processing of individuals, who in meetings are required to fulfil cognitive decision-making tasks. As a direct or indirect result, the presence of digital distractions had a marked negative impact on meeting performance and productivity. Based on the findings, it is argued that restricting digital distractions in meetings can greatly reduce the time spent in meetings, while still achieving desired meetings outcomes. Meetings are essential to effective organisational management and coordination but are also resource intensive with managers spending substantial amounts of their available work time in meetings. Organisations operating in resource constrained environments need to be increasingly efficient in their use of scarce resources and, arguably, time is the most precious resource of all. Managerial Implications Based on the findings of the present study, it is recommended that unless mobile communication devices are required to achieve meeting outcomes, managers should declare meetings as technology free zones. Doing so may lead to shorter more productive meetings giving those that often attend meetings more time to attend to other matters.

The struggle to regulate one's emotions can sometimes be difficult. Two emotion regulation strategies are to reappraise an emotional stimulus or to distract oneself from the stimulus. While there have been many investigations of both strategies, previous research suffers from methodological problems. Reappraisal conditions might be confounded by non-reappraisal-related cognitive processes, resulting in effects of distraction rather than reappraisal. In the current exploratory within-subjects study, participants completed an online survey where the conditions were held as equal as possible to avoid any differences in non-task-related cognitive processes. I measured variables that have been associated with an electrophysiological response correlated to the intensity level of emotions: the late positive potential. First, participants watched emotionally negative film clips in a reappraisal, distraction, and control condition, followed by ratings of experienced feeling. Second, participants rated the threat level of angry and neutral faces. It was hypothesized that applying ER during emotion induction compared to no ER should result in more positive ratings of experienced feeling after induction and lower threat-ratings of angry faces due to a more positive emotional state. The results showed no significant differences between conditions, most likely due to either methodological limitations or an actual lack of emotion regulation effects. I discuss future directions and improvements of the method.

The intent of this thesis is to guide further research and discussion of C-Print, meaning-for-meaning transcription and its applications to today’s dynamic classroom settings under a Universal Design Paradigm. Evidence suggests that providing these captions can benefit Deaf and Hard of Hearing populations and also that concise, textual representations of information increase retention for average learners in multimedia settings. Individual differences were considered and low internal control participants did significantly better on exams when material was captioned compared to when it was not. They also tended to outperform high internal control participants on captioned material exams.

In multimedia learning environments, research suggests that simultaneous presentation of redundant text (i.e. identical narration and on-screen text) may inhibit learning when presented with animation at the same time. However, related studies are limited to testing with cause-and-effects content information (e.g., Moreno & Mayer, 1999, 2002). This study examined the effects of redundant text on learners' memory achievement and problem solving ability. The study replicated and extended prior research by using descriptive, rather than cause-and-effect content information. The primary research questions were (a) does redundant text improve learning performance if learners are presented with instructional material that addresses subject matter other than cause-and-effect relationship? and (b) does sequential presentation of animation followed by redundant text help learning? To answer the research questions, five hypotheses were tested with a sample of 224 Taiwanese students enrolled in a college level Management Information System (MIS) courses at a management college in southern Taiwan. Statistically significant differences were found in memory achievement and problem solving test scores between simultaneous and sequential groups; while no statistically significant differences were found in memory achievement and problem solving test scores between verbal redundant and non-redundant groups. These results were supported by interviewees expressing difficulty in connecting animation and verbal explanation in the two sequential presentation groups. The interview responses also helped to explain why insignificant results were obtained when redundant and non-redundant verbal explanations with animation were presented simultaneously. In general, the results support previous research on the contiguity principle, suggesting that sequential presentations may lead to lower learning performance when animation and verbal explanation are closely related. The separation of the two types of information may increase cognitive load. In addition, the study found that impairment of redundant text was also affected by various learning characteristics, such as the structure of the instructional content and learners previous learning experiences. Recommendations for future study include: (a) research on various situations such as characteristics of the content, characteristics of learners, and difficulty of the instructional material that influences the effects of redundant text, and (b) research on prior learning experience that influences the effects of simultaneous redundant text presentations.

Optimal delivery of instruction is both critical and challenging in dynamic, scenario-based training (SBT) computer simulations such as those used by the military. Tasks that human instructors must perform during these sorts of simulated training exercises can impose a heavy burden on them. Partially due to advances in the state-of-the-art in training technology and partially due to the military's desire to reduce the number of personnel required, it may be possible to support functions that overburdened instructors perform by automating much of the SBT process in a computer simulation. Unfortunately though, after more than 50 years of literature documenting research conducted in the area of training interventions, few empirically-supported guidelines have emerged to direct the choice and implementation of effective, automated training interventions. The current study sought to provide empirical guidance for the optimal timing of feedback delivery (i.e., immediate vs. delayed) in a dynamic, SBT computer simulation. The premise of the investigation was that the demand for overall cognitive resources during the training exercise would prescribe the proper timing of feedback delivery. To test the hypotheses, 120 volunteers were randomly assigned to 10 experimental conditions. After familiarization on the experimental testbed, participants completed a total of seven, 10-minute scenarios, which were divided across two training phases. During each training phase participants would receive either immediate or delayed feedback and would perform either high or low cognitive load scenarios. Four subtask measures were recorded during test scenarios as well as subjective reports of mental demand, temporal demand and frustration. Instructional efficiency ratios were computed using both objective performance data and subjective reports of mental demand. A series of planned comparisons were conducted to investigate the training effectiveness of differing scenario cognitive loads (low vs. high), timing of feedback delivery (immediate vs. delayed), and sequencing the timing of feedback delivery and the cognitive load of the scenario. In fact, the data did not support the hypotheses. Therefore, post hoc, exploratory data analyses were performed to determine if there were trends in the data that would inform future investigations. The results for these analyses are discussed with suggested directions for future research.