No description available.

<p dir="ltr">It is well known that persons with aphasia (PWA) demonstrate deficits in sentence processing. Specifically, many show difficulties with syntactic re-analysis, or the ability to revise one’s interpretation of a sentence due to a temporary ambiguity. Emerging evidence suggests that structural priming, individuals’ tendency to unconsciously re-use a previously encountered structure, can facilitate production and comprehension of different sentence structures in PWA. However, there are inconsistencies within the literature regarding the robustness of priming across different sentence structures and tasks, and the existing findings are limited to off-line measures which do not capture real-time sentence processing. Furthermore, a range of individual variability has been shown in magnitudes of priming effects.</p><p dir="ltr">This current project addressed these critical gaps by investigating the effects of structural priming on comprehension of sentences with reduced relative (RR) clauses. Study 1 examined whether PWA show immediate structural priming and longer-term cumulative priming in a computerized self-paced reading paradigm. In this study, participants read RR target sentences that were preceded by prime sentences with either an RR or a main clause (MC) interpretation. Study 2 examined if and how individuals’ cognitive (memory) skills account for individual variability shown in structural priming. Participants completed a Serial Reaction Time task as a measure of implicit memory, and the Verbal Paired Associates I task as a measure of explicit memory. Eighteen healthy adults (HA) and 18 PWA participated in both studies.</p><p dir="ltr">In Study 1, PWA demonstrated robust and timely immediate structural priming effect, providing novel evidence that structural priming can be captured in real-time using self-paced reading, and that priming can help ameliorate syntactic re-analysis deficits in PWA. However, these online changes were not reflected in the behavioral measures, highlighting the sensitivity of self-paced reading in detecting the dissociation between automatic, real-time processing and overt behavioral responses. Cumulative priming as traditionally defined was also not significant for either group, although participants became faster at reading RR target sentences as the session progressed. Study 2’s findings suggest that implicit memory may be an important cognitive skill to promote sentence processing, whereas having strong explicit memory may not be facilitative of the learning process.</p>

In this thesis, I investigate idiom processing from two angles through three different studies. First, I approached idiom processing from a constraint-based perspective. According to this view, not all idioms are alike: they can differ regarding lexical, and linguistic characteristics, such as their level of familiarity. In this first study, I investigated the underlying processes during the comprehension of idioms with different characteristics. I used the Event Related Potential (ERP) technique, which has high temporal resolution, to investigate this issue. I provided evidence that idioms' characteristics impact their processing. More specifically, idioms which are more familiar to language users (i.e., the ones that are encountered more frequently) showed processing facilitation compared to less familiar idioms. Also, idioms with plausible literal interpretation showed processing advantages over idioms which are less likely to be interpreted literally. The second aim of the current thesis was to investigate idiom processing from an embodied account of language processing. According to this view, various sources of information (including linguistic, affective, and sensory-motor) are available and used during the comprehension of language. While, this view has become popular in many language processing studies, studies of idiom processing are still at the beginning of this journey. To be able to investigate idiom processing while considering the role of affective and sensory-motor factors, we require access to norming data. In the second (descriptive) study, I conducted a large-scale survey and collected measures of valence, arousal, concreteness, and imageability for a set of English idioms, by both native speakers of English and proficient second language speakers. In the last study, I explored how the emotional status of idioms and their concreteness contributes to their processing, and whether this contribution is modulated by idiom familiarity. We found that the impact of non-linguistic sources of information (affective and sensory-motor) is determined by idiom familiarity, such that low familiar and high familiar idioms show different behaviour where these factors are concerned. For highly familiar idioms, behaviour aligns with the findings on word processing: for example, idioms with more positive valence showed facilitative processing. Unlike highly familiar idioms, valence had an inhibitory impact on idioms with low familiarity level, such that greater valence increased the reading time.

Grammatical gender is a complex classification system and is often referred to as one of the most difficult grammatical categories for second language (L2) speakers to master. Previous research has focused on anticipatory processing of grammatical gender cues in first language (L1) speakers of various gendered languages (French, Spanish, Dutch, etc.) and has found that speakers use gender information from a preceding determiner to facilitate access to a gender-congruent noun (e.g., Dussias et al., 2013; Lew-Williams & Fernald, 2010). These findings have been consistently found among speakers of various languages when they were presented with congruent vs. incongruent determiner phrases (DPs), subsequently collapsing across grammatical genders (e.g., congruent: la maison and le bateau vs. incongruent: *le maison vs. *la bateau). Responses to individual genders cues in Spanish has been teased apart (masculine vs. feminine) as well as the effect of inhibitory control on gender processing (Beatty-Martínez, et al., 2020). A correlation between grammatical gender error recovery and increased inhibitory control was found. The current dissertation aims to dissect the processing and underlying neural mechanisms associated with masculine and feminine grammatical gender in L1 French, simultaneous French-English, and L1 English-L2 French speakers. A series of three experiments were conducted. The first two experiments used a masked priming lexical decision task where participants were presented with congruent (e.g., la maison) and incongruent (*le maison) DPs. The first experiment employed a behavioural version of the task and the second experiment focused on event-related brain potentials (ERPs). At a behavioural level, there was no indication of grammatical gender cue use. However, ERP results show that L1 speakers employ distinct processing mechanisms for feminine (P200; *le maison) incongruencies compared to feminine congruencies (la maison). The final experiment consisted of a self-paced reading task, where participants read sentences with congruent and incongruent DPs and an AX-CPT task as a measure of inhibitory control. L1 French and simultaneous French-English speakers exhibit processing difficulties with the incongruent feminine condition (*le maison) compared to the congruent feminine condition (la maison), as well as with the incongruent masculine condition (*la bateau) compared to the congruent masculine condition (le bateau). On the other hand, L2 speakers only show difficulty with the incongruent feminine condition in relation to the congruent feminine condition. Further, there was no relationship between inhibitory control and grammatical gender processing across groups. Overall, the results reflect an intricate picture of grammatical gender processing in French speakers. At a lexical level, L1 French speakers likely process incongruent feminine DPs as a lexical clash, potentially implementing further cognitive resources during processing. At a syntactic level, L1 French and simultaneous French-English speakers show processing difficulties behaviourally to gender incongruencies. L2 speakers seem to employ the use of masculine grammatical gender cues, implying that it is perhaps the presence of a feminine noun causing processing difficulty due to a feature mismatch. These results indicate that masculine and feminine genders employ distinct processing mechanisms and may be accessed in a contrasting manner.

No description available.

In this thesis, I investigate the link between A-movement and online processing in eye-tracking and self-paced reading (SPR). A-movement refers to movement of an element to an argument position, where an element may be base-generated and hold a semantic role of the main predicate of the clause. I analyze six constructions in English, divided into three experimental pairings. Unaccusative constructions argued to involve movement are contrasted with unergatives as control, in a purely intransitive pairing. Transitive verb expectations are controlled by contrasting optional transitive constructions and purported movement in inchoative constructions. Argument alternation is taken into consideration in comparing instrumental constructions and possible movement in middle constructions. The results from the SPR experiment did not show significant differences in reading times or fixation durations between pairings in any regions. In the eye-tracking results, no significant effects were found at the verb region, where the syntactic complexity of movement could lead to greater processing effort. In the subject noun region of the optional transitive and inchoative constructions and instrumental and middle constructions, significant differences in gaze duration, total fixation duration, and go-past time were found. These results are compatible with theories of frequency effects. Differences at the adverb could support lexical or derivational approaches, as controls and experimental conditions had equal length fixations in our first pairing, controls had longer fixations in our second pairing, and experimental items had longer fixations in our third pairing. Ultimately, the results do not offer strong support for the derivational approach, and are not accounted for through a lexical approach. / Thesis / Master of Science (MSc)

21st century work environments are becoming more dynamic; they are fast-paced and require critical incidents to be dealt with in a shorter time frame. At the same time, in order for organizations to survive knowledge management (KM) systems need to be in place that allow organizations to learn from these incidents and use the knowledge gained to solve new problems. The knowledge life cycle consists of three phases: create, preserve, and disseminate. The knowledge life cycle also involves the transformation of knowledge from tacit to explicit, which is important to shift knowledge from the individual level to the organizational level; this represents a very important objective of KM. KM is not a domain on its own but intersects with other areas such as organizational learning, performance support, and communities of practice. Learning and performance support are among the concerns of practitioners in the sister fields of instructional design and technology (IDT) and human performance technology (HPT). Yet still, there are not many studies that examine KM through the lens of these professions. There is a need for knowledge to be accessible and for structures to be put in place to facilitate the knowledge life cycle. The purpose of this study was to explore how workers in a fast-paced environment go through the knowledge life cycle when dealing with critical incidents, and the factors that acted as driving and restraining forces. A single instrumental case study research design was used to study employees of a walk-in computer software help desk. The HPT model along with principles and procedures of critical incident technique were used to create a framework for data collection, which included interviews, a focus group session, and examination of extant data. Findings revealed that workers went through the knowledge life cycle by making internal and external connections and both organizational and individual factors impacted the flow of knowledge. A disconnection between available tools and work processes posed the greatest barrier to going through all the knowledge life cycle process. / Ph. D.

Belt conveyor accidents are mainly attributed to negligence of safety procedures during maintenance work. Entanglement, falling from heights, & collapse of structure or loose materials are the main cause of accidents. While performing maintenance tasks such as cleaning, installation and repair, belt alignment and so on (Lucas et. al. 2007). Current industry safety programs provide general guidelines for safety training, but do not require any specific training program structure (Shultz, 2002 and Shultz, 2003). For example MSHA (Mine Safety and Health Administration) only requires 24 hours of training. Typically this training is broken down into four hours of training before the employee starts work, the remaining 20 hours has to be performed within the first sixty days of work (Goldbeck, 2003). The information collected through site visits showed that in addition to completing MSHA safety training requirements companies try to reinforce safety issues through daily and weekly safety meetings on job sites. Due to lack of a required safety training structure, every company is independent in terms of their training format that they follow to train their new and experienced work force. As a result, safety engineers depend heavily on in-house safety programs (e.g. audio-video presentations) to deliver the required training hours specified by MSHA for miners. Based on a review of current training methods this research identifies four problems; existing training methods to educate miners about dangers involved in conveyor belt environments are mainly passive, safety related information in scattered in various media such as images, videos, paper manuals, etc., access to information in current format is difficult, and updating information is difficult. This research addressed these identified problems by devising a new approach of learning to augment existing methods of training and evaluate the potential of this concept as a safety-training tool. Research has shown that individuals have their own learning style in which they can increase their retention and stimulate their cognitive learning. The proposed work addresses issues relative to passive vs. active learning and classroom-based vs. self-paced training by developing and implementing an interactive multimedia-based safety-training tool called the Digital Safety Manual (DSM). After the DSM was developed it was put through a series of usability evaluation and subjective analysis to measure the potential of the concept. The evaluation and subjective analysis involved both the novice and expert users. The results that were yield after the evaluations and subjective analysis shows that the DSM has more learning advantages than the typical training methods and it can be used as a supplementary training method to complement the current approaches of training. / Master of Science

Storskaliga, öppna, internetbaserade kurser (MOOCar) introducerades år 2008 av George Siemens och Stephen Downes och deras popularitet har ökat ända sedan dess. Förespråkare av MOOCar påstår att de har en potential att möjliggöra livslångt lärande för människor från hela världen. Sedan de första kurserna har två olika former av MOOCar utvecklats, cMOOCar som har utvecklats utifrån lärandeteorin konnektivismen och xMOOCar som är relativt lika vanliga internetbaserade kurser med den skillnad att antalet kursdeltagare är mer eller mindre obegränsat. År 2016 anslöt sig MOOC initiativet från KungligaTekniska högskolan (KTHx) till edX, en undervisningsplattform för xMOOCar. Möjlighet till social interaktion med andra kursdeltagare och lärare erbjuds på edX i form av asynkrona diskussions forum. Forskning om hur den sociala interaktionen ter sig i diskussionsforumen och dess potential för att främja lärande är i dagsläget knapp. Syftet med detta examensarbete är att undersöka den sociala interaktionenskaraktär i två olika xMOOCar, en med självstyrd studietakt och en lärarledd. En ökad förståelse för den sociala interaktionen som för nuvarande äger rum i diskussionsforumen kan vara behjälplig för lärare vid utformningen av undervisningen i xMOOCar. Diskussionsforumen för två kurser av respektive kategori av xMOOC från KTHx om matematik och programmering ingår i denna undersökning. Både en konventionell innehållsanalys och en riktad innehållsanalys baserad på lärandeteorin undersökande gemenskap (CoI) har genomförts för att belysa olika aspekter av den sociala interaktionens karaktär och främjande av lärande i diskussions forumen. Resultatet av undersökningen visar att den sociala interaktionen är opersonlig och att kursdeltagarna initierar interaktionen för att få svar på frågor som huvudsakligen lärare besvarar genom att instruera eller informera. Det bildas ingen gemenskap och det uppvisas lägre nivåer av kognitiv närvaro i diskussionsforumen. För att främja lärande skulle diskussionsforumen istället kunna användas för att engagera de aktiva kursdeltagarna i diskussioner och lärarnas fokus kan förflyttas från att instruera och informera till att etablera en trygg miljö för interaktion. / Massive Open Online Courses (MOOCs) were introduced in 2008 by George Siemens and Stephen Downes and their popularity has increased ever since. Advocates of MOOCs claim that they have the potential to enable lifelong learning for people all over the world. Since the first MOOC, two kinds of MOOCs have developed, cMOOCs that developed from the theory of learning, connectivism, and xMOOCs, which are relatively similar to usual online courses, with the difference that the number of participants is more or less unlimited. In 2016, the MOOC initiative from the Royal Institute of Technology (KTHx) joined edX, a teaching platform for xMOOCs. Opportunity for social interaction with other course participants and teachers is offered on edX in the form of asynchronous discussion forums. Research on the characterof the social interaction in the discussion forums and its potential for promoting learning in xMOOCs is currently limited. The purpose of this master thesis is to investigate the nature of social interaction in two different xMOOCs, one self-paced and one instructor-paced. An increased understanding of the current social interaction that is taking place in the discussion forums can be helpful to teachers in the design of teaching in xMOOCs. In this master thesis two discussion forums from courses of the respective categories of xMOOCs have been studied. Both a conventional content analysis and a directed contentanalysis based on the learning theory Community of Inquiry (CoI) have been conducted to highlight different aspects of the nature of the social interaction and how one may promote learning in the discussion forums. The result of the analysis shows that the social interaction in the discussion forums is impersonal and that the participants initiate the interaction by asking questions that are mainly answered by the teachers, by either instructing or informing. No community is formed and the discussion forums show lower levels of cognitive presence. In order to promote learning, discussion forums may be used to engage the active participants in discussions and it might be benificial if the teachers focused on establishing a safe environment for interaction, as opposed to focusing on instruction and informing.

abstract: While predicting completion in Massive Open Online Courses (MOOCs) has been an active area of research in recent years, predicting completion in self-paced MOOCS, the fastest growing segment of open online courses, has largely been ignored. Using learning analytics and educational data mining techniques, this study examined data generated by over 4,600 individuals working in a self-paced, open enrollment college algebra MOOC over a period of eight months. Although just 4% of these students completed the course, models were developed that could predict correctly nearly 80% of the time which students would complete the course and which would not, based on each student’s first day of work in the online course. Logistic regression was used as the primary tool to predict completion and focused on variables associated with self-regulated learning (SRL) and demographic variables available from survey information gathered as students begin edX courses (the MOOC platform employed). The strongest SRL predictor was the amount of time students spent in the course on their first day. The number of math skills obtained the first day and the pace at which these skills were gained were also predictors, although pace was negatively correlated with completion. Prediction models using only SRL data obtained on the first day in the course correctly predicted course completion 70% of the time, whereas models based on first-day SRL and demographic data made correct predictions 79% of the time. / Dissertation/Thesis / Doctoral Dissertation Educational Technology 2017