The effects of co-witness discussion on confidence and precision in eyewitness memory reports

We examined the influence of co-witness discussion on the metacognitive regulation of memory reports. Participants (N?=?92) watched a crime video. Later, a confederate confidently agreed with (gave confirming feedback), disagreed with (gave disconfirming feedback), or gave no feedback (control) regarding participants’ answers to questions about the video. Participants who received disconfirming feedback reported fewer fine-grain details than participants in the confirming and control conditions on a subsequent, individual recall test for a different question set. Unexpectedly, this decrease in fine-grain reporting was not accompanied by a decrease in participants’ confidence in the accuracy of their fine-grain responses. These results indicate that receiving social comparative feedback about one’s memory performance can affect rememberers’ metamemorial control decisions, and potentially decrease the level of detail they volunteer in later memory reports. Further research is needed to assess whether these results replicate under different experimental conditions, and to explore the effects of social influences on metamemory.     

Facilitating memory‐based lie detection in immediate and delayed interviewing: The role of mnemonics

We experimentally investigated how different mnemonic techniques employed in an interview conducted immediately after an event affected truth tellers' and liars' responses when they were interviewed again after a 2‐week delay. We also compared how verbal accounts changed over time within truth tellers and liars, and how consistent both groups were. Participants (n = 143) were shown a mock intelligence operation video and instructed either to tell the truth or lie about its contents in two interviews, one of which was immediately after watching the video and the other after a 2‐week delay. In the immediate interview, they were asked to provide a free recall and then asked to provide further information via one of three mnemonics: context reinstatement, sketch, or event‐line. In the delayed interview, they were asked to provide only a free recall. Truth tellers reported more visual, spatial, temporal, and action details than did liars both immediately and after a delay. Truth tellers experienced more of a decline in reporting details after a delay than did liars, and this decline was affected by the mnemonic used. Truth tellers thus showed, more than liars, patterns of reporting indicative of genuine memory decay. Liars produced patterns of a “stability bias” instead. Truth tellers and liars were equally consistent between their immediate and delayed statements.     

The development and validation of a measure of character: The CIVIC

The present research study sought to develop and validate a character scale – the Comprehensive Inventory of Virtuous Instantiations of Character using a total sample size of 3679 across five studies. In Study 1, character trait items were generated using an integrative classification system. In Study 2, character trait scales were further refined and their factor structure examined, revealing eight higher-order character dimensions or character cores: appreciation, intellectual engagement, fortitude, interpersonal consideration, sincerity, temperance, transcendence, and empathy. Study 3 established convergent validity of character traits with extant measures and discriminability from personality facets, social desirability, and moral cognitive development. Study 4 revealed that character cores were more strongly related to evaluative constructs than personality dimensions. Study 5 demonstrated that character cores predicted performance and psychological well-being outcomes above and beyond personality. The implications of our findings for the assessment and taxonomy of character are discussed.     

The Bare Past

Philosophia - In this paper, I first introduce one of the most prominent objections against the Growing Block Theory of time (GBT), the so-called ‘epistemic objection’, according to...     

Positional inference in rhesus macaques

Animal Cognition - Understanding how organisms make transitive inferences is critical to understanding their general ability to learn serial relationships. In this context, transitive inference...     

Grit Across Nations: The Cross-National Equivalence of the Grit-O Scale

Journal of Happiness Studies - Despite its popularity in practice, the Grit-O Scale has shown inconsistent factorial structures and differing levels of internal consistency in samples outside the...     

The L/M-opponent channel provides a distinct and time-dependent contribution towards visual recognition

The visual pathway has been successfully modelled as containing separate channels consisting of one achromatically opponent mechanism and two chromatically opponent mechanisms. However, little is known about how time affects the processing of chromatic information. Here, parametrically defined objects were generated. Reduced-colour objects were interleaved with full-colour objects and measures of recognition performance (d') were compared by the continuous serial recognition paradigm. Measures were taken at multiple delay intervals (1, 4, 7, and 10 s). When chromatic variations were removed, recognition performance was impaired, but at the 1 s and 10 s intervals only. When luminance variations were removed, no impairment resulted. When only L/M-opponent modulations were removed, a deficit in performance was produced only at the 1 s and 10 s intervals, similar to the removal of chromatic variation. When only S-opponent modulations were removed, no impairment was observed. The results suggest that the L/M-opponent pathway provides a specialised contribution to visual recognition, but that its effect is modulated by time. A three-stage process model is proposed to explain the data.     

Bridging the Divide or Intensifying the Conflict? How Disagreement Affects Strong Predilections about Sexual Minorities

This study draws on a sample of participants in online groups that discussed legalization of same‐sex marriage, to examine whether exposure to perceived disagreement decreases—as the deliberative theorists hope—or rather increases—as the research on confirmation bias predicts—strongly held predilections. Overall, participants' views towards same‐sex marriage and sexual minority rights remained largely unchanged after deliberating, regardless of the ideological composition of their groups. Consistent with the confirmation bias model, those who strongly opposed same‐sex marriage and sexual minority rights prior to the discussions and who perceived that others disagreed with them became even more opposed, and this effect was not a short‐term shift. Strong proponents, on the other hand, did not polarize in their views, but instead became slightly less favorable towards same‐sex marriage and sexual minority rights as a result of disagreement. Implications of these findings for deliberation of contentious issues are discussed.     

Through neural stimulation to behavior manipulation: a novel method for analyzing dynamical cognitive models

The dynamical systems' approach to cognition (Dynamicism) promises computational models that effectively embed cognitive processing within its more natural behavioral context. Dynamical cognitive models also pose difficult, analytical challenges, which motivate the development of new analytical methodology. We start by illustrating the challenge by applying two conventional analytical methods to a well-known Dynamicist model of categorical perception. We then introduce our own analysis, which works by analogy with neural stimulation methods, and which yields some novel insights into the way the model works. We then extend and apply the method to a second Dynamicist model, which captures the key psychophysical trends that emerge when humans and animals compare two numbers. The results of the analysis-which reveals units with tuning functions that are monotonically related to the magnitudes of the numbers that the agents must compare-offer a clear contribution to the contentious debate concerning the way number information is encoded in the brain.