The importance of gestural communication: a study of human–dog communication using incongruent information

We assessed how water rescue dogs, which were equally accustomed to respond to gestural and verbal requests, weighted gestural versus verbal information when asked by their owner to perform an action. Dogs were asked to perform four different actions (“sit”, “lie down”, “stay”, “come”) providing them with a single source of information (in Phase 1, gestural, and in Phase 2, verbal) or with incongruent information (in Phase 3, gestural and verbal commands referred to two different actions). In Phases 1 and 2, we recorded the frequency of correct responses as 0 or 1, whereas in Phase 3, we computed a ‘preference index’ (percentage of gestural commands followed over the total commands responded). Results showed that dogs followed gestures significantly better than words when these two types of information were used separately. Females were more likely to respond to gestural than verbal commands and males responded to verbal commands significantly better than females. In the incongruent condition, when gestures and words simultaneously indicated two different actions, the dogs overall preferred to execute the action required by the gesture rather than that required verbally, except when the verbal command “come” was paired with the gestural command “stay” with the owner moving away from the dog. Our data suggest that in dogs accustomed to respond to both gestural and verbal requests, gestures are more salient than words. However, dogs’ responses appeared to be dependent also on the contextual situation: dogs’ motivation to maintain proximity with an owner who was moving away could have led them to make the more ‘convenient’ choices between the two incongruent instructions.     

The moral obligations of reasonable non-believers

People who do not believe that there is a God constitute an obvious problem for divine command metaethics. They have moral obligations, and are often enough aware of having them. Yet it is not easy to think of such persons as “hearing” divine commands. This makes it hard to see how a divine command theory can offer a completely general account of the nature of moral obligation. The present paper takes a close look at this issue as it emerges in the context of the most recent version of Robert Adams’ modified divine command theory. I argue that, despite a valiant attempt to do so, Adams does not succeed in giving an adequate account of the moral obligations of non-believers. More generally, I claim that if divine commands are construed as genuine speech acts, theists are well advised not to adopt a divine command theory.     

Too dog tired to avoid danger: Self-control depletion in canines increases behavioral approach toward an aggressive threat

This study investigated whether initial self-control exertion by dogs would affect behavioral approach toward an aggressive threat. Dogs were initially required to exert self-control (sit still for 10 min) or not (caged for 10 min) before they were walked into a room in which a barking, growling dog was caged. Subject dogs spent 4 min in this room but were free to choose where in the room they spent their time. Approaching the unfamiliar conspecific was the predisposed response, but it was also the riskier choice (Lindsay, 2005). We found that following the exertion of self-control (in comparison with the control condition), dogs spent greater time in proximity to the aggressor. This pattern of behavior suggests that initial self-control exertion results in riskier and more impulsive decision making by dogs.     

BEHAVIORAL MOMENTUM IN THE TREATMENT OF NONCOMPLIANCE

Behavioral momentum refers to the tendency for behavior to persist following a change in environmental conditions. The greater the rate of reinforcement, the greater the behavioral momentum. The intervention for noncompliance consisted of issuing a sequence of commands with which the subject was very likely to comply (i.e., high-probability commands) immediately prior to issuing a low-probability command. In each of five experiments, the high-probability command sequence resulted in a “momentum” of compliant responding that persisted when a low-probability request was issued. Results showed the antecedent high-probability command sequence increased compliance and decreased compliance latency and task duration. “Momentum-like” effects were shown to be distinct from experimenter attention and to depend on the contiguity between the high-probability command sequence and the low-probability command.     

A new methodology providing evidence of two distinct processes in the production of hand/foot simultaneous responses

To get simultaneous responses of the hand and the foot, it is mandatory to compensate for the longer peripheral motor conduction delay of the foot. According to the reactive-projective model [Paillard, J. (1948). Quelques données psychophysiologiques relatives au déclenchement de la commande motrice (Some psychophysiological data in relation to the releasing of the motor commands). Année Psychologique, 28-47; Paillard, J. (1990). Réactif et prédictif: deux modes de gestion du geste de la motricité. In V. Nougier, & J. Blanchi (Eds.), Pratiques sportives et modélisation du geste (Sport activity and gesture modeling) (pp. 13-56). Grenoble: Université Joseph-Fourier.] no compensation occurs in a reaction time situation; the hand responds before the foot, which indicates a single motor command released for both effectors. However, in a self-initiated condition, the foot tends to precede the hand suggesting that two distinct motor commands are issued, with the foot command first. Fully self-initiated movements are not usual. It is more usual to prepare a response in anticipation of the time occurrence of a stimulus (e.g., a musician following a conductor, synchronized swimmers emerging together with the music). Therefore, we developed a methodology to test whether the model holds in an anticipation coincidence task. In Experiment 1, the participants were asked to initiate a synchronized hand/foot response when the continuous visual stimulus (constant speed) reaches a target. The results fitted the model. In Experiment 2, anticipation coincidence tasks were performed in three conditions: using the foot (1) or the hand (2) alone, and using the hand and the foot simultaneously (3). Following a constant stimulus protocol, short tones were randomly produced, prior the stimulus, to indicate the participants to inhibit their response. As expected, the frequencies of correct inhibition in each preset period followed a sigmoid curve. The command release is assumed to occur at the biserial point (50% of inhibition). The results confirmed that the motor command of the foot is released sooner than the command of the hand. The hand/foot delay is lower in the simultaneous condition, because the command of the hand is released 40 ms earlier; while the foot command is 10 ms earlier. These data confirm and extend the projective-reactive model to a new category of coordination behavior.     

Additive and interactive effects in memory for subject-performed tasks

Abstract

Three experiments were carried out to explore reasons for the superior recall and recognition of subject-performed tasks (SPTs) relative to memory for the equivalent verbal commands. In Experiment 1, list structure was varied; list structure affected recall, but the variable did not interact with the SPT/command manipulation. The same absence of an interaction was found in Experiment 2 with respect to different retrieval conditions and also with respect to the age of adult subjects. Experiment 3 confirmed that the age difference was as large for SPTs as it was for verbal commands. In addition, an interaction between SPT/command and levels of processing was found in Experiment 3. Differences between the additive and interactive patterns of results are discussed in terms of SITS contributing both additional (possibly motoric) information and also conceptual information that overlaps with information added by other variables.     

A Jewish Modified Divine Command Theory

We claim that divine command metaethicists have not thought through the nature of the expression of divine love with sufficient rigor. We argue, against prior divine command theories, that the radical difference between God and the natural world means that grounding divine command in divine love can only ground a formal claim of the divine on the human; recipients of revelation must construct particular commands out of this formal claim. While some metaethicists might respond to us by claiming that this account leads to an inability to judge between better and worse constructions of the commanded life, we propose that an analysis of the human response to divine love—theological eros—can be the basis for an articulation of a philosophical theology (in our case, negative theology) that can guide the religious believer toward generating particular principles for ethical action that are grounded in an account of divine action. By linking divine command to imitatio Dei, the believer can have confidence that her imitative acts of God are not inaccurate constructions of the commanded life.     

Command use and compliance in staff communication with elderly residents of long-term care facilities

Verbal communication between nursing assistants and individuals with dementia can be challenging, particularly during hands-on caregiving tasks. Although there are many aspects of verbal communication that can affect the quality of an interaction, one potentially important communication variable is the types of commands issued by nursing assistants when they need a resident to complete a task. The purpose of this study was to examine the kinds of commands used by nursing care staff when they interact with patients with dementia during activities of daily living. Commands were categorized according to their feasibility/specificity as well as form. An additional goal of this study was to measure compliance and noncompliance rates associated with the various categories of commands. Results indicate that alpha commands (clear, concise, and feasible) account for higher compliance and less noncompliance compared with beta commands (ambiguous, interrupted, and not feasible). In addition, commands that are stated directly, that clarify a previous command, and that are repeated exactly produce better compliance. It is concluded that training nursing staff to change the types of commands they provide during caregiving tasks may reduce distress experienced by both staff and residents.     

A randomised controlled trial of acceptance-based cognitive behavioural therapy for command hallucinations in psychotic disorders

Command hallucinations represent a special problem for the clinical management of psychosis. While compliance with both non-harmful and harmful commands can be problematic, sometimes in the extreme, active efforts to resist commands may also contribute to their malignancy. Previous research suggests Cognitive Behaviour Therapy (CBT) to be a useful treatment for reducing compliance with harmful command hallucinations. The purpose of this trial was to evaluate whether CBT augmented with acceptance-based strategies from Acceptance and Commitment Therapy could more broadly reduce the negative impact of command hallucinations. Forty-three participants with problematic command hallucinations were randomized to receive 15 sessions of the intervention "TORCH" (Treatment of Resistant Command Hallucinations) or the control, Befriending, then followed up for 6 months. A sub-sample of 17 participants was randomized to a waitlist control before being allocated to TORCH or Befriending. Participants engaged equally well with both treatments. Despite TORCH participants subjectively reporting greater improvement in command hallucinations compared to Befriending participants, the study found no significant group differences in primary and secondary outcome measures based on blinded assessment data. Within-group analyses and comparisons between the combined treatments and waitlist suggested, however, that both treatments were beneficial with a differential pattern of outcomes observed across the two conditions.     

Right hemisphere comprehension of verbs in patients with complete forebrain commissurotomy: Use of the dichotic method and manual performance

The paradigm of dichotic listening was used to investigate verbal comprehension in the right, so-called “nonverbal,” hemisphere. Verbal commands were presented to the right and left ears in the simultaneous (dichotic) paradigm. There were striking instances, especially when the left hemisphere was occupied with some extraneous task, in which the right hemisphere understood the verbal command and executed the appropriate motor responses. In those instances the left hemisphere gave no overt response. Although the left hemisphere was usually dominant, it can be nevertheless concluded that not only can the right hemisphere understand verbal commands but can also express itself manually by executing actions more complex than object retrieval or pointing. As has been known for some time, the blockage of the ipsilateral pathway seems so complete during dichotic listening in the commissurotomy patient that there is no report of the words in the left ear—only of those presented to the right. At the same time there is normal report when words are presented to the left ear alone. It was found in the present study, however, that this model is too simple and only applies to the verbal response paradigm of dichotic listening. Under circumstances of dichotic presentation where the stimulus in the left ear (ipsilateral pathway) is necessary or important to the left hemisphere for completing a task, words from both pathways are reported. One may conclude that there exists a gating mechanism in each hemisphere that controls the monitoring of each auditory pathway and the degree of ipsilateral suppression.     

Using a High Probability Command Sequence to Increase Classroom Compliance: The Role of Behavioral Momentum

One of the most problematic behaviors in children with developmental disabilities is noncompliance. Although behavioral research has provided strategies to impact noncompliance, oftentimes the methodologies are consequent techniques, which may not be conducive to implementation by the classroom teacher. In this teacher-designed and implemented study, a sequence of high-probability instructional commands preceded the targeted low-probability command, in an attempt to increase compliance to the low-probability command. Results, discussed within the body of behavioral momentum research, showed an increase in compliance to low-probability classroom commands for a seven year-old student with moderate mental retardation and Down Syndrome. Results are discussed as (a) an effective, antecedent approach to classroom compliance and (b) re-connecting the gap between applied behavioral research and experimentally controlled classroom practice.     

The Effects of Parent Training and Ritalin on the Parent-Child Interactions of Hyperactive Boys

Using a multiple baseline across subjects design, the present study assessed the effects of parent training alone and combined with methylphenidate on the social interactions of three mothers with their hyperactive boys. Two mothers received instruction in child behavior management while their sons remained off medication. Subsequently, these boys returned to medication to evaluate whether the drug further enhanced the effects of parent training. The third child received the drug treatment first and then remained on medication while his mother underwent the same parent training program. Results indicated that both treatments alone decreased the amount of commands given by the mother as well as parent ratings of deviant child behavior in the home, but produced variable improvements in child compliance to commands. More reliable improvements in child compliance to commands. More reliable improvements from each treatment occurred in the duration of compliance per command. the combination of treatments failed to produce any further improvements in mother-child interactions than that achieved by either treatment alone. Contrary to earlier research, only parent training resulted in increases in the mothers' use of positive attention following child compliance.     

Increasing Classroom Compliance: Using a High-Probability Command Sequence with Noncompliant Students

Noncompliance is one of the most problematic behaviors within the school setting. One strategy to increase compliance of noncompliant students is a high-probability command sequence (HPCS; i.e., a set of simple commands in which an individual is likely to comply immediately prior to the delivery of a command that has a lower probability of compliance). Although research has shown this technique to be effective at increasing compliance across various settings and behaviors, most studies have been limited to participants with moderate to severe developmental disabilities. The current study targeted 2 noncompliant elementary-age students within the general education setting. Two teachers were taught to integrate HPCS into ongoing classroom reading instruction and independent seatwork. For both participants, higher percentages of compliance with low-probability commands were displayed during intervention and maintenance phases compared to baseline levels. Results suggest that using an antecedent intervention based on HPCS holds promise for school personnel working with noncompliant students within the general education setting.     

ON A PARADOX OF CHRISTIAN LOVE

The two love commands attributed to Jesus clearly show the basic feature of Christianity as a “religion of love.” However, it may be argued that there is conflict between these commands, so that the Christian idea of love confronts a deep paradox: on the one hand, it takes loving God as the ultimate foundation of loving one's neighbor and loving one's neighbor as the perfect manifestation of loving God. On the other hand, it gives supremacy to loving God over loving one's neighbor, with the result that, in cases of conflict, Christianity has to sacrifice loving one's neighbor to loving God and thus to negate the second great command by the first.     

Commands as Divine Attributes

Theories of ethics that attempt to incorporate divine speech or commands as necessary elements in the construction of moral obligations are often viewed as vulnerable to a challenge based on the so‐called Euthyphro dilemma. According to this challenge, opponents of theistic ethics suppose that divine speech either informs one of a preexisting set of values and obligations, which makes it inconsequential, or is entirely arbitrary, which makes it irrational. This essay analyzes some of the debates on the nature of divine commands in eleventh‐century works of Islamic jurisprudence (u?ūl al‐fiqh). I show that Mu?tazilī jurisprudents advanced the view that divine commands were actions performed in time that had concrete manifestations, while Ash?arīs argued that divine speech in general, and commands in particular, were eternal divine attributes. After exposing certain weaknesses in the Euthyphro‐inspired objections to theistic ethics, I argue that the Ash?arī idea of commands as divine attributes is a promising move for scholars interested in defending a divine command view of moral obligation.     

The meaning of before and after for preschool children

Preschool children's understanding of temporal relationships was examined in terms of their comprehension of sentences containing clauses linked by before and after. The relative importance of order of mention and main-subordinate relations strategies in children's interpretation of temporal order information was also evaluated.Divergent error patterns emerged on the tasks; omissions prevailed on the two tasks involving response to commands, reversals prevailed on the other. Further examination revealed that omissions reflected ambiguity in the linguistic structure of commands. Thus the effect of main-subordinate relations was confounded with directness of command. On all comprehension tasks, however, performance was superior on sentence forms in which order of mention and order of occurrence correspond.     

Using Statistical Natural Language Processing for Understanding Complex Responses to Free-Response Tasks

Whereas great advances have been made in the statistical sophistication of assessments in terms of evidence accumulation and task selection, relatively little statistical work has explored the possibility of applying statistical techniques to data for the purposes of determining appropriate domain understanding and to generate task-level scoring rules. Now that complex tasks are becoming increasingly prevalent, the inattention to item-level scoring is becoming more problematic. This study utilizes exploratory techniques to examine the differences between experts and novices in command usage and troubleshooting strategies in the field of computer networking. Participants were students and instructors of the Cisco Networking Academy Program as well as experts from the field of networking. Each participant was asked to perform troubleshooting tasks and a log of their actions was recorded. Log files containing all commands that participants entered while completing the troubleshooting tasks were analyzed using techniques of Statistical Natural Language Processing (SNLP). Results indicated that experts and novices differed in the types of commands that were used as well as in the sequence of those commands. Moreover, some patterns of examinee response that were found were entirely unexpected, leading to a rethinking of the appropriate conceptualization of the domain and the tasks. Previous assumptions about expert novice differences were shown to be faulty along with previously constructed scoring rules based on those assumptions. Comprehensive research in the application of statistical techniques to the understanding of domains and the validation of scoring rules are recommended.     

Should I fetch one or the other? A study on dogs on the object choice in the bimodal contrasting paradigm

The present study assessed how dogs weigh gestural versus verbal information communicated to them by humans in transitive actions. The dogs were trained by their owners to fetch an object under three conditions: a bimodal congruent condition characterized by using gestures and voices simultaneously; a unimodal gestural condition characterized by using only gestures; and a unimodal verbal condition characterized by using only voices. An additional condition, defined as a bimodal incongruent condition, was later added, in which the gesture contrasted with the verbal command, that is, the owner indicated an object while pronouncing the name of the other object visible to dogs. In the incongruent condition, seven out of nine dogs choose to follow the gestural indication and performed above chance, two were at chance, whereas none of the dogs followed the verbal cues above chance. The dogs, as a group, performed above chance the gestural command in 73.6% of cases. The analysis of latencies in the above-mentioned four conditions exhibited significant differences. The unimodal verbal and the gestural conditions recorded a slower performance than both the bimodal incongruent and congruent conditions. No statistical differences were observed between the unimodal and bimodal conditions. Our results demonstrate that dogs, trained to respond equally well to gestural and verbal commands, choose to follow the indication provided by the gestural command than the verbal one to a significant extent in transitive actions. Furthermore, the responses to bimodal conditions were found to be quicker than the unimodal ones.     

The Postcolonial Other

Abstract

I locate the starting point for this essay on the common ground between the traditionally conceived attribute of divine love and the moral theory known as divine command ethics. The latter assumes that something is good because God commands it; with the former, the gift of divine love requires love in return. In this light, God's command to love is recognized as goodness itself by those ‘he’ loves. In other words, those persons loved by God are morally motivated to love. However, this theistic account of divine command theory simply assumes that love is knowable, do-able and so required. The obstacles to knowing love and loving are rarely made explicit. To tackle some of these, this essay is loosely structured around a dialogue with Kantian morality. Analysis of the gendered nature of love will take place indirectly in the course of my account of duty, pure goodness and moral motivation.     

Do domestic dogs interpret pointing as a command?

Domestic dogs comprehend human gestural communication flexibly, particularly the pointing gesture. Here, we examine whether dogs interpret pointing informatively, that is, as simply providing information, or rather as a command, for example, ordering them to move to a particular location. In the first study a human pointed toward an empty cup. In one manipulation, the dog either knew or did not know that the designated cup was empty (and that the other cup actually contained the food). In another manipulation, the human (as authority) either did or did not remain in the room after pointing. Dogs ignored the human’s gesture if they had better information, irrespective of the authority’s presence. In the second study, we varied the level of authority of the person pointing. Sometimes this person was an adult, and sometimes a young child. Dogs followed children’s pointing just as frequently as they followed adults’ pointing (and ignored the dishonest pointing of both), suggesting that the level of authority did not affect their behavior. Taken together these studies suggest that dogs do not see pointing as an imperative command ordering them to a particular location. It is still not totally clear, however, if they interpret it as informative or in some other way.