Gaze direction and head rotation are powerful cues that inform humans about another person's attention, intentions and even emotion. Previous research has focused on understanding how people make judgements about individual faces in direct view. However in everyday life, people are often presented with groups of faces and need to judge where the attention of that group is directed, such as in group conversations or when giving presentations. This thesis presents research whose aim is to better understand how gaze direction and head rotation are perceived in the visual periphery and in groups. First, observers' perception of gaze deviation in the visual periphery was tested, using psychophysical methods and modelling. The results showed that observers' ability to judge gaze perception is severely limited, and that observers' judgements are severely biased by head rotation in the visual periphery. Second, observers' ability to perceive the average gaze or head direction of a group of spatially distributed faces was investigated. This was done using equivalent noise analysis, a technique which gives estimates for observers' internal noise (how certain they are in their judgements of any individual face) and their effective sample size (how many faces they are able to combine into their average). The findings revealed that head rotation was averaged with less uncertainty and greater effective sample size than gaze deviation, suggesting that observers can more precisely and efficiently pool information about head rotation than gaze. Finally, averaging of heads and gaze stimuli presented in temporal sequences was analysed using the same equivalent noise technique and compared to spatial averaging. In sequences, the differences in processing between head and gaze direction disappear, suggesting that poor peripheral perception of gaze is the limit on our averaging of gaze cues.

The world of animation has painted an inspiring image of what the robots of the future could be. Taking the robots R2D2 and C3PO from the Star Wars films as representative examples, these robots are portrayed as being more than just machines, rather, they are presented as intelligent and capable social peers, exhibiting many of the traits that people have also. These robots have the ability to interact with people, understand us, and even relate to us in very personal ways through a wide repertoire of social cues. As robotic technologies continue to make their way into society at large, there is a growing trend toward making social robots. The field of Human-Robot Interaction concerns itself with studying, developing and realising these socially capable machines, equipping them with a very rich variety of capabilities that allow them to interact with people in natural and intuitive ways, ranging from the use of natural language, body language and facial gestures, to more unique ways such as expression through colours and abstract sounds. This thesis studies the use of abstract, expressive sounds, like those used iconically by the robot R2D2. These are termed Non-Linguistic Utterances (NLUs) and are a means of communication which has a rich history in film and animation. However, very little is understood about how such expressive sounds may be utilised by social robots, and how people respond to these. This work presents a series of experiments aimed at understanding how NLUs can be utilised by a social robot in order to convey affective meaning to people both young and old, and what factors impact on the production and perception of NLUs. Firstly, it is shown that not all robots should use NLUs. The morphology of the robot matters. People perceive NLUs differently across different robots, and not always in a desired manner. Next it is shown that people readily project affective meaning onto NLUs though not in a coherent manner. Furthermore, people's affective inferences are not subtle, rather they are drawn to well established, basic affect prototypes. Moreover, it is shown that the valence of the situation in which an NLU is made, overrides the initial valence of the NLU itself: situational context biases how people perceive utterances made by a robot, and through this, coherence between people in their affective inferences is found to increase. Finally, it is uncovered that NLUs are best not used as a replacement to natural language (as they are by R2D2), rather, people show a preference for them being used alongside natural language where they can play a supportive role by providing essential social cues.

Children’s confidence in their own knowledge and their understanding of other’s intentions may influence their willingness to learn novel information from others. Two studies investigated whether 24-month-old children take into account these different sources of information when learning novel labels. In Study 1, children interacted with a speaker who referred to familiar objects in either a knowledgeable (e.g., the speaker confidently stated, “I know what that is”) or an ignorant manner (e.g., the speaker doubtfully stated, “I don’t know what that is.”). The previously knowledgeable or ignorant speaker then provided a novel label for either a novel or a familiar object. Children were less willing to apply a novel label to a familiar object from a speaker who previously had expressed ignorance than one who previously had expressed confidence in his/her knowledge of object labels. In contrast, when objects were novel, children were equally willing to learn a novel label regardless of the level of knowledge portrayed by the speaker. In Study 2, children interacted with a speaker who provided either accurate or inaccurate labels for familiar objects in a manner that expressed uncertainty about the information being offered (e.g., “I think that’s a …”). Children’s willingness to accept second labels for familiar objects was examined. Children were equally likely to learn the novel label for a familiar object from the accurate and the inaccurate speaker. In contrast to past findings which present differences in willingness to learn from accurate and inaccurate speakers, children in this study may have taken into account the speaker’s lack of confidence when deciding whether to accept or reject the novel information being provided. Young children are not naïve observers accepting novel label information from any source. They attend to cues about the speaker’s level of knowledge by 24 months. They also are capable of comparing their knowledge with the information being presented by an adult speaker and deciding whether to rely on their own knowledge or accept the information being provided. Both reliability cues from the speaker and children’s prior knowledge influence their willingness to learn novel information. / text

This is a study of the influence of the familiarity of students with the narrator of video tutorials, in a blended learning situation, on both the perceived and actual effectiveness of the learning materials, in terms of students’ learning efficiency – where a course is traditional in format and online learning is carried out with the help of Narrated Video Screen Captures (NVSCs). The study also focused on the interaction of student-narrator gender similarity and students’ individual differences (conscientiousness and test-anxiety) with voice familiarity. Thus, the study sought to fill a gap in knowledge regarding the influence of familiarity with the narrator in multimedia learning material on the efficiency of learning within a blended learning context. The research paradigm was deductive, employing a mixed methods and a case study research and using quasi-experiments. In order to compare the relational efficiency of the different instructional conditions, a calculative approach was used that combined measurement of mental effort with task performance. In addition to the mental effort questionnaires and task performance, students completed an assessment questionnaire for the NVSCs. In addition, semi-structured interviews and a follow-up questionnaire were used for collection of corroborative data, in order to shed more light on this matter. Findings showed significant influence of voice familiarity on most of the learning efficiency indices and on perceived effectiveness of NVSCs. Gender similarity was significant only with unfamiliar voice and there was no significant interaction between conscientiousness and test anxiety and voice familiarity. Thus, it was concluded that when students have a personal relationship with the class teacher, exposure to multimedia learning materials with an unfamiliar narrator has an adverse influence on their learning efficiency. These findings add to the established voice related principles of Cognitive Theory of Multimedia Learning and Social Agency Theory. Contribution to knowledge was made by filling the gap in knowledge in the area of multimedia instructional design.

There is increasing recognition that contextual aspects of social situations are important determinants of children's social information processing. While it is generally accepted that friends influence children's social behavior, the immediate influence of a friend in specific conflict situations is less understood. Contextualized vignettes depicting hypothetical peer conflict situations were developed to examine the impact of situational context, namely a friend's suggested attribution and an antagonist action cue, on students' social information processing. A repeated measures design examined the proximal influence of situational context on 4th and 5th grade students' (N=367) own intent attributions, emotional reactions, and response evaluations to hypothetical peer conflict scenarios. Results indicated that situational context is important to students' social cognition. Students adjusted their social cognition and emotion in response to cues to an antagonist's intent and were influenced by a friend's comments during peer conflict scenarios. Students' responses were more aligned with the antagonist's action than a friend's suggested attribution. However, a friends' attribution was influential in situations where it conflicted with the antagonist's action. Results of this study help to increase knowledge regarding the context of social cognition and can assist in the development of more ecologically valid social skill interventions.

Tidigare forskning har uttryckt stöd för den betydelsefulla roll informell kommunikation utgör för kunskapsdelning. Denna kommunikation äger till stor del rum i fysiska förhållanden, men vilka blir konsekvenserna när den förpassas till en digital miljö? Denna fallstudie undersöker hur den informella kommunikationen har kommit att se ut till följd av att företagets anställda arbetar på distans samt hur detta potentiellt kan ha kommit att påverka dess roll för kunskapsdelning inom organisationen. Med utgångspunkt i tidigare forskning utformades ett ramverk för att beskriva påverkanssambandet mellan distansarbete, informell kommunikation och kunskapsdelning. För att studera detta utfördes en fallstudie på ett e-handelsföretag, där sju intervjuer genomfördes och delar av en intern medarbetarundersökning granskades.Resultaten indikerar att förekomsten av informell kommunikation minskade samtidigt som den blev mer arbetsorienterad. Detta tycks ha haft negativa konsekvenser för den interna kunskapsdelningen då anställda ansåg sig ha sämre inblick i andra avdelningars arbete. Den försämrade insynen kan eventuellt innebära komplikationer för organisatorisk koordinering och nytänkande.

This study was an exploration of adults with long-term hearing loss (LTHL) and how it may relate to social intelligence (SI) proficiency. The outcome of this study was intended to illuminate a gap in the literature, namely, the manner in which those with long-term LTHL were able to understand social situations and communicate with others when auditory comprehension was limited. A quantitative nonexperimental method was used that provided the Tromso Social Intelligence Scale (TSIS) to a group of 66 adults with LTHL who were diagnosed with hearing loss as children, as well as a group of 70 adults with no discernable hearing loss (NDHL). The TSIS was used to determine if those with LTHL would have scored higher on the total scale score and the subscales of social information processing and social awareness, than would those with NDHL. The results of the study were determined by an independent t test. There was no significant difference in the total scale and subscale scores between LTHL and NDHL for this relatively small samples study. These findings could aid the hearing loss community at large through a focus on SI skills to improve confidence and communication for those with LTHL. One social change benefit of this study demonstrates that SI for people with LTHL is comparable to people with NDHL. Such a finding suggests that while people with LTHL did not rate higher in SI, they also are not impaired in social situations because of their hearing loss.

Language learning takes place in the context of social relationships. Yet, we know little about the mechanisms that link social interaction to word learning. This dissertation focuses on two aspects of that relationship, social contingency and eye gaze, and asks whether these cues may be a critical ingredient in the well established link between social support and language learning. Specifically, we investigate how toddlers learn novel verbs in one of three conditions. In one, training on four new words was conducted using live interaction. In the second, children were trained on the same words using a contingent screen condition (video-chat). Finally, in the third, they were taught the same words in a video condition that did not maintain social contingency (yoked video). Results suggest that children exposed to novel verbs via contingent screen condition learned these words to the same degree as children in the live condition and far exceeded their peers who were exposed to non-contingent video only. Analysis of looking patterns during training further suggests that children in contingent interactions rely on eye gaze during social interactions, which predicts language learning. Taken together, this dissertation begins to operationally define social cues and to illuminate the mechanism that links social interaction and language acquisition. It also speaks to the literature on learning through screen media as the first study to examine word learning through video chat technology. / Psychology

The preferential looking paradigm was used to investigate how toddlers integrate recently learned grammatical cues with well-established social cues in a novel word-learning scenario. To test this we examined children’s ability to decipher the referent of a novel noun using the grammatical information from a plural cue and social information from an eye-gaze cue. Experiment 1 is the first study showing that children as young as 24 months of age can rely on plural markings alone to infer the referent of a novel noun. Preliminary results of Experiment 2 suggest that when the plural cue is presented alongside contradicting information from a gaze direction cue, children still map the novel word to the grammatically cued object. Taken together, these results suggest that by the time children reach their second birthday, even newly learned grammatical information, such as plural markings, might already outweigh established social cues.

The preferential looking paradigm was used to investigate how toddlers integrate recently learned grammatical cues with well-established social cues in a novel word-learning scenario. To test this we examined children’s ability to decipher the referent of a novel noun using the grammatical information from a plural cue and social information from an eye-gaze cue. Experiment 1 is the first study showing that children as young as 24 months of age can rely on plural markings alone to infer the referent of a novel noun. Preliminary results of Experiment 2 suggest that when the plural cue is presented alongside contradicting information from a gaze direction cue, children still map the novel word to the grammatically cued object. Taken together, these results suggest that by the time children reach their second birthday, even newly learned grammatical information, such as plural markings, might already outweigh established social cues.