This paper presents two cognitive models that simulate the production of referring expressions in the iMAP task—a task-oriented dialog. One general model is based on Dale and Reiter’s (1995)incremental algorithm, and the other is a simple template model that has a higher correlation with the data but is specifically geared toward the properties of the iMAP task. The property of the iMAP task environment that is modeled here is that the color feature is unreliable for identifying referents while other (...) features are reliable. The low computational cost of the incremental algorithm for generating referring expressions makes it an interesting starting point for a cognitive model. However, its explanatory power is limited, because it generates uniquely distinguishing referring expressions and because it considers features for inclusion in the referring expression in a fixed order. The first model extends the original incremental algorithm by an ability to adapt to feedback of whether a referring expression was used successfully, but it seems to overpredict the frequency with which distinguishing expressions are made and underpredict the frequency of overspecified referring expressions. The second model produces features for referring expressions purely based on its current estimate of a feature’s utility. Both models predict the observed human behavior of decreasing use of color terms and increasing use of useful feature terms. (shrink)

This study investigates interpersonal processes underlying dialog by comparing two approaches, interactive alignment and interpersonal synergy, and assesses how they predict collective performance in a joint task. While the interactive alignment approach highlights imitative patterns between interlocutors, the synergy approach points to structural organization at the level of the interaction—such as complementary patterns straddling speech turns and interlocutors. We develop a general, quantitative method to assess lexical, prosodic, and speech/pause patterns related to the two approaches and their impact on (...) collective performance in a corpus of task-oriented conversations. The results show statistical presence of patterns relevant for both approaches. However, synergetic aspects of dialog provide the best statistical predictors of collective performance and adding aspects of the alignment approach does not improve the model. This suggests that structural organization at the level of the interaction plays a crucial role in task-oriented conversations, possibly constraining and integrating processes related to alignment. (shrink)

Differences and similarities between modal and amodal completions can only be understood by considering the goals of visual completion: unity, shape, and perceptual quality. Pessoa et al. cannot reject representational accounts of vision because of flaws with isomorphic representations of perceptual quality: representations and processes for perceptual quality (modal completion) and most likely dissociable from those for unity and shape (nonmodal completions).

One type of task interaction that students in a foreign language class may do is using the language they are studying for discussion. This paper analyzes interaction among Japanese university students participating in such discussions in English. The participants are interactionally competent; one source of resources they draw on to construct this competence is their first language, Japanese. Participants occasionally use Japanese to refer to Japanese things. They also use Japanese in the pursuit of intersubjectivity, such as using Japanese to (...) solve a word search, with this being designed as a solution of last resort. Also, participants typically go beyond intersubjectivity as they translate Japanese into English. Word search design and going beyond intersubjectivity make visible participants’ task orientation to English as the proper language to use in these discussions. This task orientation provides a means for understanding the institutionality of the interaction. (shrink)

Artificial intelligence is a cutting-edge technology that has been widely applied in tourism operations. To enhance tourists' experience, many tourism suppliers introduced AI devices to interact with tourists. Previous studies classified AI devices as task- and social- oriented based on their functions; however, current models that explain customers' intention to use AI devices did not reflect the discrepancy between the two different types. Therefore, this paper attempts to fill this gap by proposing a theoretical model for the use of task-oriented (...) AI devices. Based on the multi-stage appraisal framework and the Structural Equation Modeling analysis, this paper presents the following findings: utilitarian motivation, interaction convenience, and task-technology fit are the factors appraised in the first stage; perceived competence and flow experience are the factors appraised in the second stage; utilitarian motivation, interaction convenience, and task-technology fit are positively associated with perceived competence. Perceived competence positively influences flow experience, which further affects customers' switching intention from task-oriented AI devices to human service; the serial mediating effect of perceived competence and flow experience between the stimulus mentioned in the first appraisal stage and the switching intention is confirmed. This study reveals the underlying psychological mechanism when customers use task-oriented AI devices, and it provides a theoretical framework for task-oriented AI device adoption. (shrink)

Anecdotal evidence suggests that participants in conversation can sometimes act as a coalition. This implies a level of conversational organization in which groups of individuals form a coherent unit. This paper investigates the implications of this phenomenon for psycholinguistic and semantic models of shared context in dialog. We present a corpus study of multiparty dialog which shows that, in certain circumstances, people with different levels of overt involvement in a conversation, that is, one responding and one not, can (...) nonetheless access the same shared context. We argue that contemporary models of shared context need to be adapted to capture this situation. To address this, we propose “grounding by proxy,” in which one person can respond on behalf of another, as a simple mechanism by which shared context can accumulate for a coalition as a whole. We explore this hypothesis experimentally by investigating how people in a task-oriented coalition respond when their shared context appears to be weakened. The results provide evidence that, by default, coalition members act on each other's behalf, and when this fails they work to compensate. We conclude that this points to the need for a new concept of collective grounding acts and a corresponding concept of collective contexts in psycholinguistic and semantic models of dialog. (shrink)

Drawing on a corpus of eight task-based interactions involving a map task ), this article seeks to focus on how speakers orient to directional terms in an interactional context, and in so doing, to add to features that can be deemed to characterize this speech exchange system. Analysis of the data using conversation analysis showed that features of the talk were confirmation and clarification checks, which provided an opportunity to check understanding and the accuracy of the instruction leading to a (...) correction, acknowledgement or further information; modulated repair and mitigated criticism, resulting in the maintenance of an affiliative stance towards the other speaker; and avoidance of problems that viewpoints or directional terms might cause. Problems with the directional terms in this corpus confirm prior research that the confusion between east and west, and left and right are the terms that cause problems for speakers. (shrink)

We used several cue–target SOAs and three different degrees of cue predictability , to investigate the role of awareness of cue–target predictability on cueing effects. A group of participants received instructions about the informative value of the cue, while another group did not receive such instructions. Participants were able to extract the predictive value of a spatially peripheral cue and use it to orient attention, whether or not specific instructions about the predictive value of the cue were given, and no (...) matter their ability to correctly report it in a post-test questionnaire. In the non-predictive block, bad estimators who received no instructions showed regular cueing effects, while good estimators exhibited smaller and non-significant facilitatory effects at the short SOA and an absence of significant IOR at longer SOAs. However, for the instructions group, the pattern of results reversed. (shrink)

Humans use their spatial information processing abilities flexibly to facilitate problem solving and decision making in a variety of tasks. This article explores the question of whether a general strategy can be adapted for performing two different spatial orientation tasks by testing the predictions of a computational cognitive model. Human performance was measured on an orientation task requiring participants to identify the location of a target either on a map (find‐on‐map) or within an egocentric view of a space (find‐in‐scene). A (...) general strategy instantiated in a computational cognitive model of the find‐on‐map task, based on the results from Gunzelmann and Anderson (2006), was adapted to perform both tasks and used to generate performance predictions for a new study. The qualitative fit of the model to the human data supports the view that participants were able to tailor a general strategy to the requirements of particular spatial tasks. The quantitative differences between the predictions of the model and the performance of human participants in the new experiment expose individual differences in sample populations. The model provides a means of accounting for those differences and a framework for understanding how human spatial abilities are applied to naturalistic spatial tasks that involve reasoning with maps. (shrink)

Visual information follows at least two branches in the human nervous system, following a common input stage: a cognitive ''what'' branch governs perception and experience, while a sensorimotor ''how'' branch handles visually guided behavior though its outputs are unconscious. The sensorimotor system is probed with an isomorphic task, requiring a 1:1 relationship between target position and motor response. The cognitive system, in contrast, is probed with a forced qualitative decision, expressed verbally, about the location of a target. Normally, the cognitive (...) system is influenced by context-induced illusions of visual direction, while the sensorimotor system is not. Here, we inquire whether the process of making a spatially based decision is critical in forcing subjects to use the information in the cognitive system for spatial tasks. Subjects hear a tone that determines whether they jab an ''X'' or an ''O'' with the forefinger. Despite making a decision about which target to contact, the jab is not influenced by the position of a surrounding frame, indicating that choice can be handled within the context-insensitive sensorimotor system. (shrink)

Studies using Posner’s spatial cueing paradigm have demonstrated that participants can allocate their attention to specific target locations based on the predictiveness of preceding cues. Four experiments were conducted to investigate attentional orienting processes operating in a high probability condition as compared to a low probability condition using various types of centrally-presented cues. Spatially-informative cues resulted in cueing effects for both probability conditions, with significantly larger CEs in the high probability conditions than the low probability conditions. Participants in the high (...) probability conditions reported little or no awareness of cue–target probabilities after task completion. Our results provide support for an implicit learning account of the proportion valid effect under experimental conditions involving spatially-informative central cues and relatively short stimulus onset asynchronies. (shrink)

Based on implicit leadership theory, we examine the congruence effect of leader-follower power distance orientation on follower trust in a supervisor and work engagement, which in turn influences employees’ task performance. Results of Polynomial regressions on 526 dyads supported the congruence effect hypothesis. The results show that (1) the congruence of leader-follower power distance orientation leads to better performance; (2) under the condition of congruence, Subordinate task performance is higher when leader-follower power distance orientation matching in low-low ratings congruence than (...) it is in high-high ratings congruence; (3) under the condition of asymmetrical incongruence, the follower had higher task performance when a leader’s power distance orientation is lower than a follower’s power distance orientation; (4) trust in supervisor and the work engagement mediates the effect of congruence of leader-follower power distance orientation on employees’ task performance; (5) trust in supervisor also mediates the effect of congruence of leader-follower power distance orientation on employees’ work engagement. (shrink)

The Washington National Cathedral, set on the highest hill in the capital city of the world's greatest economic and military power, is an iconic location for an examination of the intersection of immaterial faith, material power, and human conscious experience. It is a location made even more symbolic due to the fact that surrounding the Cathedral on three sides are three private schools -- an elementary school (Beauvoir) to the east, a boys' school (St. Albans) to the south, and a (...) girls' school (National Cathedral School) to the north. The students at these private schools include children of persons who wield the secular power headquartered in the City below the Cathedral Tower. Every day these students study and compete upon a hill giving them panoramic views over the great monuments and symbols of American power: the Capitol Dome, the Washington Monument, the entire City. And the Cathedral that marks their spot upon this globe is visible from all over the region, high above the City. These students are intelligent and informed, and thus for purposes of a dramatic-oriented form of exploration of interesting issues, provide a persuasive characterization for participants in a dialog of two iconic children, older teenagers, a boy and a girl, students at these schools and worshippers in the Cathedral, to develop an examination of themes of faith, power, and the experience of sentience in the material world, walking within and around the Washington National Cathedral, two of its affiliated schools, and the gardens and forests surrounding. The approach recalls the form of the dialogs of Plato, in which persons of elite educational and cultural status encounter each other within a specific building or location, and proceed to discuss such matters as are provoked to mind by the encounter of those minds in that place. The major character of the piece, Merian Validus, is, among other things, a bell-ringer of the Cathedral, a denizen of its highest tower -- as are in reality a group of the girls of NCS. She is an Esmeralda performing the role of Quasimodo. After reading this, think of that the next time you land at Reagan National Airport and catch your cab, looking right at the Cathedral as you speed north into the City. (shrink)

Previous research on whether source memory is enhanced for emotionally valenced sources yielded inconclusive results. To identify potential boundary conditions, we tested whether encoding instructions that promote affective versus different types of non-affective item-source-processing foster versus hamper source-valence effects. In both experiments, we used neutral words as items superimposed on emotional (positive & negative) or neutral pictures as sources. Source pictures were selected based on valence and arousal ratings collected in a pre-study such that only valence varied across sources. Source (...) memory was measured via multinomial modelling. In Experiment 1, we applied an affective, item-focused orienting task (OT; i.e. word-pleasantness ratings) during item-source encoding and found enhanced source memory for emotionally valenced (positive & negative) compared to neutral sources. In Experiment 2, we systematically manipulated encoding instructions and again found enhanced source memory for emotionally valenced sources with an affective OT. No such effects occurred in the non-affective conditions, where participants were instructed to integrate item and source (item-source-fit judgments), to focus on the item (living-non-living judgments), or to encode the items only, respectively. With intentional item encoding, however, source memory was surprisingly better for positive than negative sources. We conclude that source-valence effects might unfold only under affective processing. (shrink)

Spatial asymmetries are an intriguing feature of directed attention. Recent observations indicate an influence of temperament upon the direction of these asymmetries. It is unknown whether this influence generalises to visual orienting behaviour. The aim of the current study was therefore to explore the relationship between temperament and measures of spatial orienting as a function of target hemifield. An exogenous cueing task was administered to 92 healthy participants. Temperament was assessed using Carver and White's (1994) Behavioural Inhibition System and Behavioural (...) Activation System (BIS/BAS) scales. Individuals with high sensitivity to punishment and low sensitivity to reward showed a leftward asymmetry of directed attention when there was no informative spatial cue provided. This asymmetry was not present when targets were preceded by spatial cues that were either valid or invalid. The findings support the notion that individual variations in temperament influence spatial asymmetries in visual orienting, but only when lateral targets are preceded by a non-directional (neutral) cue. The results are discussed in terms of hemispheric asymmetries and dopamine activity. (shrink)

The article presents the results of two experimental studies in which I investigated the effect of the situational context and action vs. state orientation on perseverance and efficacy in task performance. The results of Study 1 confirmed that in a context which supports autonomy - as opposed to one which induces external control - people are much more likely to be not only more persistent and effective in their actions but also much more interested in the performed task. Interest in (...) the performed task seems to also be - to some extent- a mediator in the relationship between persistence and efficacy. The results of Study 2 confirmed that a context, which supports autonomy positively, affects both persistence and efficacy. At the same time, the study shows that in a context, which supports autonomy, action-oriented people are more persistent and efficient in their actions than are state-oriented people. What is more, in an autonomy-supporting context, action-oriented people have a more positive attitude towards a given task than do state-oriented people. (shrink)

First of all some problems of a scientifical dialogue between the different systems in the East and the West are being presented. In such a dialogue symmetry and reflexivity as principles of orientation have an important function. These principles are close to reality in the field of the philosophy of science and history of science in the DDR. By the controversy between the philosophy of science and the history of science in the DDR and by the way of discussing the (...) Kuhnian theory within the Marxist-Leninist-philosophy of science, together with an apologetical demarcation a real westernoriented willingness of dialogue in the DDR can be remarked. Even far-reaching positions can be found so that an intensification of the dialogue is possible. (shrink)

First of all some problems of a scientifical dialogue between the different systems in the East and the West are being presented. In such a dialogue symmetry and reflexivity as principles of orientation have an important function. These principles are close to reality in the field of the philosophy of science and history of science in the DDR. By the controversy between the philosophy of science and the history of science in the DDR and by the way of discussing the (...) Kuhnian theory within the Marxist-Leninist-philosophy of science, together with an apologetical demarcation a real westernoriented willingness of dialogue in the DDR can be remarked. Even farreaching positions can be found so that an intensification of the dialogue is possible. (shrink)

Speech planning is a sophisticated process. In dialog, it regularly starts in overlap with an incoming turn by a conversation partner. We show that planning spoken responses in overlap with incoming turns is associated with higher processing load than planning in silence. In a dialogic experiment, participants took turns with a confederate describing lists of objects. The confederate’s utterances (to which participants responded) were pre‐recorded and varied in whether they ended in a verb or an object noun and whether (...) this ending was predictable or not. We found that response planning in overlap with sentence‐final verbs evokes larger task‐evoked pupillary responses, while end predictability had no effect. This finding indicates that planning in overlap leads to higher processing load for next speakers in dialog and that next speakers do not proactively modulate the time course of their response planning based on their predictions of turn endings. The turn‐taking system exerts pressure on the language processing system by pushing speakers to plan in overlap despite the ensuing increase in processing load. (shrink)

In this paper we attempt to identify which peer collaboration characteristics may be accountable for conceptual change through interaction. We focus on different socio‐cognitive aspects of the peer dialog and relate these with learning gains on the dyadic as well as the individual level. The scientific topic that was used for this study concerns natural selection, a topic for which students’ intuitive conceptions have been shown to be particularly robust. Learning tasks were designed according to the socio‐cognitive conflict instructional (...) paradigm. After receiving a short instructional intervention on natural selection, paired students were asked to collaboratively construct explanations for certain evolutionary phenomena while engaging in dialectical argumentation. Two quantitative coding schemes were developed, each with a different granularity. The first assessed discrete dialog moves that pertained to dialectical argumentation and to consensual explanation development. The second scheme characterized the dialog as a whole on a number of socio‐cognitive dimensions. Results from analyses on the dyadic as well as the individual level revealed that the engagement in dialectical argumentation predicted conceptual learning gains, whereas consensual explanation development did not. These findings open up new venues for research on the mechanisms of learning in and from peer collaboration. (shrink)