How you lie affects what you remember

We investigated how telling different types of lies may impact memory. Participants studied pictures of objects, and later lied and told the truth about these and new objects once or multiple times by describing them or by denying they had seen them. Forty-eight hours later, participants were tested on their source memory. Results revealed that participants had good memory for having falsely described a never-seen object, but relatively poor memory for having falsely denied seeing a studied object. These results suggest that telling certain types of lies may make a person more likely to forget having lied. In addition, repeated truthful denials of having seen a picture paradoxically increased false memories for having seen it. Thus, telling the truth does not always prevent the possibility of memory distortion.     

The Relationship Between Violent Fantasy and Alcohol Misuse in Aggressive Behaviours

Alcohol misuse and cognitions supportive of violent behaviour have been linked with higher likelihood of engaging in aggressive actions. The present study investigated the interactive effects of alcohol abuse and violent fantasy on aggressive behaviour. A community sample of 279 adults recruited from South East Queensland completed the Aggression Questionnaire, Alcohol Use Disorder Identification Test, Scheduled of Imagined Violence, and the Marlowe‐Crowne Social Desirability Scale. Controlling for age, gender, and social desirability response, participants who acknowledged fantasies about violence and higher levels of alcohol consumption reported higher levels of aggression. Importantly, the interactive effects of alcohol and fantasy indicated that the contribution of violent fantasies was greatest among individuals with high levels of alcohol use compared with individuals with low alcohol use. The current findings, in conjunction with recent experimental evidence, highlight potential concerns regarding the additive effects of alcohol and violent fantasy.     

Manipulation of visual information does not change the accuracy of distance estimation during a blindfolded walking task

While humans rely on vision during navigation, they are also competent at navigating non-visually. However, non-visual navigation over large distances is not very accurate and can accumulate error. Currently, it is unclear whether this accumulation of error is due to the visual estimate of the distance or to the locomotor production of the distance. In a series of experiments, using a blindfolded walking test, we examine whether enhancing the visual estimate of the distance to a previously seen target, through environmental enrichment, visual imagery, or repeated exposure would improve the accuracy of blindfold navigation across different distances. We also attempt to decrease the visual estimate in order to see if the opposite effect would occur. Our results would indicate that manipulation of the static visual distance estimate did not change the navigation accuracy to any great extent. The only condition that improved accuracy was repeated exposure to the environment through practice. These results suggest that error observed during blindfold navigation may be due to the locomotor production of the distance, rather than the visual process.