The effect of repeated testing on judgement bias in domestic dogs (Canis familiaris)

Animal Cognition - Judgement bias paradigms are increasingly being used as a measure of affective state in dogs. Approach to an ambiguous stimulus is commonly used as a measure of affect, however,...     

Experience With a Linguistic Variant Affects the Acquisition of Its Sociolinguistic Meaning: An Alien-Language-Learning Experiment

How do speakers learn the social meaning of different linguistic variants, and what factors influence how likely a particular social–linguistic association is to be learned? It has been argued that the social meaning of more salient variants should be learned faster, and that learners' pre-existing experience of a variant will influence its salience. In this paper, we report two artificial-language-learning experiments investigating this. Each experiment involved two language-learning stages followed by a test. The first stage introduced the artificial language and trained participants in it, while the second stage added a simple social context using images of cartoon aliens. The first learning stage was intended to establish participants' experience with the artificial language in general and with the distribution of linguistic variants in particular. The second stage, in which linguistic stimuli were accompanied by images of particular aliens, was intended to simulate the acquisition of linguistic variants in a social context. In our first experiment, we manipulated whether a particular linguistic variant, associated with one species of alien in the second learning phase, had been encountered in the first learning phase. In the second experiment, we manipulated whether the variant had been encountered in the same grammatical context. In both cases we predicted that the unexpectedness of a new variant or a new grammatical context for an old variant would increase the variant's salience and facilitate the learning of its social meaning. This is what we found, although in the second experiment, the effect was driven by better learners. Our results suggest that unexpectedness increases the salience of variants and makes their social distribution easier to learn, deepening our understanding of the role of individual language experience in the acquisition of sociolinguistic meaning.     

Perception of resyllabification in French

In three experiments, we examined the effects of phonological resyllabification processes on the perception of French speech. Enchainment involves the resyllabification of a word-final consonant across a syllable boundary (e.g., in chaque avion, the /k/ crosses the syllable boundary to become syllable initial). Liaison involves a further process of realization of a latent consonant, alongside resyllabification (e.g., the /t/ in petit avion). If the syllable is a dominant unit of perception in French (Mehler, Dommergues, Frauenfelder, & Segui, 1981), these processes should cause problems for recognition of the following word. A cross-modal priming experiment showed no cost attached to either type of resyllabification in terms of reduced activation of the following word. Furthermore, word- and sequence-monitoring experiments again showed no cost and suggested that the recognition of vowel-initial words may be facilitated when they are preceded by a word that had undergone resyllabification through enchainment or liaison. We examine the sources of information that could underpin facilitation and propose a refinement of the syllable's role in the perception of French speech.     

A Millennial Misconception: Prophets as prognosticators

A preoccupation with predicting the second coming of Christ and the end of the world has led premillennialists to regard the Hebrew prophets primarily as prognosticators who foretold events which would take place hundreds of years after their own time. This article explores the background to and the legacy of this misconception. After noting the premillennialist understanding of prophecy, it considers the perceived relationship between the Jewish people and the end-time in Christian fundamentalist thought. The dangers associated with such a distorted view of Scripture are highlighted in the final part.     

Early visual tagging: effects of target-distractor similarity and old age on search, subitization, and counting

Three experiments examined the effects of target-distractor (T-D) similarity and old age on the efficiency of searching for single targets and enumerating multiple targets. Experiment 1 showed that increasing T-D similarity selectively reduced the efficiency of enumerating small (< 4) numerosities (subitizing) but had little effect on enumerating larger numerosities (counting) or searching for a single target. Experiment 2 provided converging evidence using fixation frequencies and a finer range of T-D similarities. Experiment 3 showed that T-D similarity had a greater impact on older than on young adults, but only for subitizing. The data are discussed in terms of the mechanisms and architecture of early visual tagging, dissociable effects in search and enumeration, and the effects of aging on visual processing.     

Building tasks from verbal instructions: An EEG study on practice trial exposure and task structure complexity during novel sequences of behavior

Configuring the mind to perform a novel task is an effortful process and one that is related to differences in general intelligence. Previous research has suggested that when participants are given instructions for a future task, representations of the rules contained in the instructions can influence subsequent behavior, even when the rules are not necessary to perform the upcoming task. One hypothesis for the continued activation of rule representations suggests that the practice trials participants perform before the experimental trials may instantiate the unnecessary task rules into participants’ mental model of the task (i.e., the task space). To test this hypothesis, EEGs were recorded as participants (N = 66) completed a multirule task designed to contrast the effects of increasing task structure complexity and practice trial exposure. The results showed that, as was predicted, performance is significantly poorer when more task rules are specified in the task instructions. Practice trials with the extra rule did not affect task performance, indicating that an unacted verbal instruction is sufficient to incorporate the rule into participants’ mental model of the task. The EEG results showed that instruction complexity was linked to a phasic increase in frontal theta synchronization but reduced posterior alpha and beta desynchronization. These changes in synchronization occurred during a time period of low intertrial phase coherence and suggest that participants were “checking the task rules” amidst a trial. This transient neural activity may reflect compensatory mechanisms for dealing with increased mind-wandering that is more likely to occur in complex tasks.     

Different Perspectives Regarding Quality of Life in Chronically ill and Healthy Individuals

The areas that were suggested as most important with regard to Quality of Life (QoL) were examined in groups of individuals who were healthy, and those with a chronic condition. An electronic survey was completed by 892 participants (261 healthy and 631 with a chronic condition). They answered three questions relating to QoL: what is most important to you; what areas most impact your QoL; and an open question what does QoL mean to you. Across the three questions both groups highlighted physical functioning, independence and mobility as key areas for QoL. However, the group with a chronic condition tended to find issues of functioning such as pain, fatigue, and sleep as more important to their QoL than the healthy participants. In contrast, the healthy participants tended to note the importance of relationships and family as more important than the group with a chronic condition. That there were such differences between the groups might suggest that different aspects of QoL could be rated as more important when examining this issue with samples with a chronic condition and those without such a condition.     

Experiencing Adverse Social Relationships: the Development and Validation of a Self-Report Scale that Measures Individuals’ Histories of Social Punishment (HoSP)

Although the relationship between childhood trauma and psychological maladjustment is well established, the link between punishing social interactions and psychopathology has yet to be explored. This may be due, in part, to the lack of appropriate measurement tools. This investigation aimed to develop and validate an instrument to measure histories of social punishment defined as adverse, day-to-day interactions with significant others. Study 1 examined the factor structure and test-retest reliability of the scale. Study 2 confirmed the factor structure solution and tested its convergent and discriminant validity. Study 3 explored the relationship between social punishment and obsessive-compulsive disorder and depression, as well as the role of gender. Overall, the scale had very good to excellent psychometric properties. Significant correlations were found between ratings of social punishment and certain pathological behaviors. Further, our findings demonstrated that males tended to report more adverse social experiences than females and as a consequence more symptoms of psychopathology. These findings extend and support the link between adverse experiences and the development of various psychopathological conditions.     

Overnight lexical consolidation revealed by speech segmentation

Two experiments explored the consolidation of spoken words, and assessed whether post-sleep novel competitor effects truly reflect engagement of these novel words in competition for lexical segmentation. Two types of competitor relationships were contrasted: the onset-aligned case (such as "frenzylk"), where the novel word is a close variant of the existing word: they start at the same time point and overlap on most of their segments; and the fully embedding case (such as "lirmucktoze"), where the existing word corresponds to a smaller embedded portion of its novel competitor and is thus less noticeable. Experiment 1 (pause detection) revealed a similar performance for both cases, with no competitor effect immediately after exposure, but significant inhibition after 24 h and seven days. Experiment 2 (word spotting) produced exactly the same pattern; however, as is the case with existing word carriers (cf. McQueen, Norris, & Cutler, 1994), the inhibition was much stronger for fully embedded than for onset-aligned targets (e.g., "lirmuckt" vs. "frenzyl"). Meanwhile, explicit measures of learning, i.e., free recall and recognition, improved over time. These results cannot be explained by either consolidation of episodic traces or acquisition of new phonological/dialectal variants. We argue instead that they reflect a general trait of vocabulary learning and consolidation.