Explain this: explaining childhood events inflates confidence for those events

To examine whether explaining hypothetical childhood events makes people more confident that the events really happened, we used a method similar to the imagination inflation procedure devised by Garry, Manning, Loftus, and Sherman (1996). First, participants rated how confident they were that a list of events occurred in their childhood. Two weeks later, participants explained how four of the eight target events could have happened to them before the age of 10. Finally, participants made confidence ratings about the list of childhood events for a second time. Participants were more confident that the explained hypothetical childhood events really did happen compared to events they did not explain. We discuss both theoretical and practical implications of these results. Copyright © 2004 John Wiley & Sons, Ltd.     

When Photographs Create False Memories

ABSTRACT— Photographs help people illustrate the stories of their lives and the significant stories of their society. However, photographs can do more than illustrate events; in this article, we show that photographs can distort memory for them. We describe the course of our "false-memory implantation" research, and review recent work showing that photographs can sometimes increase—while other times decrease—false memories. First, we discuss research showing that a doctored photo, showing subjects taking a completely fictitious hot-air-balloon ride, can cultivate false memories for that experience. We hypothesize that the photograph helps subjects to imagine details about the event that they later confuse with reality. Second, we show that although photographs are indeed powerful sources of influence on memory, they are not necessarily as powerful as narrative. In fact, in certain circumstances, photographs might constrain imagination. Third, we discuss research showing that true photographs can also cultivate false memories. Finally, we present recent work showing that photographs can create false memories for current events.     

The effect of fast speech rate on stuttering frequency during delayed auditory feedback

Delayed auditory feedback (DAF) has been documented to improve fluency in those who stutter. The increased fluency has been attributed to the slowed speech rate induced by DAF, but recent experiments have suggested that increasing the speech rate may also decrease stuttering under DAF. This investigation described the effect of combining a fast speech rate and DAF on the fluency of four people who stutter. Fluency of the two mildly dysfluent subjects was the same for both no DAF and DAF conditions at normal and at fast oral reading rates. In contrast, the two severely dysfluent subjects improved in fluency from the no DAF to the DAF conditions. They were found to be dysfluent at both normal and fast oral reading rates without DAF. The results of the study point to the need for further research on the relationship between speech rate and stuttering frequency under conditions of DAF and no DAF. EDUCATIONAL OBJECTIVES: Readers will learn about and be able to describe how the frequency of stuttering is affected by: (1) speech rates; (2) DAF; and (3) how stuttering severity influences such effects.     

True photographs and false memories

Abstract— Some trauma-memory-oriented psychotherapists advise clients to review old family photo albums to cue suspected "repressed" memories of childhood sexual abuse. Old photos might cue long-forgotten memories, but when combined with other suggestive influences they might also contribute to false memories. We asked 45 undergraduates to work at remembering three school-related childhood events (two true events provided by parents and one pseudoevent). By random assignment, 23 subjects were also given their school classes' group photos from the years of the to-be-recalled events as memory cues. As predicted, the rate of false-memory reports was dramatically higher in the photo condition than in the no-photo condition. Indeed, the rate of false-memory reports in the photo condition was substantially higher than the rate in any previously published study.     

Evidence that photos promote rosiness for claims about the future

When people rapidly judge the truth of claims about the present or the past, a related but nonprobative photo can produce “truthiness,” an increase in the perceived truth of those claims (Newman, Garry, Bernstein, Kantner, & Lindsay, 2012). What we do not know is the extent to which nonprobative photos cause truthiness for the future. We addressed this issue in four experiments. In each experiment, people judged the truth of claims that the price of certain commodities (such as manganese) would increase (or decrease). Half of the time, subjects saw a photo of the commodity paired with the claim. Experiments 1A and 1B produced a “rosiness” bias: Photos led people to believe positive claims about the future but had very little effect on people’s belief in negative claims. In Experiment 2, rosiness occurred for both close and distant future claims. In Experiments 3A and 3B, we tested whether rosiness was tied to the perceived positivity of a claim. Finally, in Experiments 4A and 4B, we tested the rosiness hypothesis and found that rosiness was unique to claims about the future: When people made the same judgments about the past, photos produced the usual truthiness pattern for both positive and negative claims. Considered all together, our data fit with the idea that photos may operate as hypothesis-confirming evidence for people’s tendency to anticipate rosy future outcomes.     

Personality for free: Psychometric properties of a public domain Australian measure of the five‐factor model

Fifty items from Goldberg's International Personality Item Pool were compiled to form a public‐domain measure of personality, the Australian Personality Inventory (API). Data from a random community sample (N = 7615) and a university‐based sample (N = 271) were used to explore psychometric properties of this 50‐item measure of the five‐factor model of personality (FFM). In both samples, internal reliabilities were adequate. In the university‐based sample an appropriate pattern of convergent and divergent relationship was found between scale scores and domain scores from the NEO Five‐Factor Inventory. After adjusting for an apparent response set (mean response across items), exploratory factor analyses clearly retrieved the FFM in both samples. It is provisionally concluded that raw scale scores from the API provide reliable estimates of the FFM, but adjustment for mean response across the 50 items might clarify the five‐factor structure, especially in less educated samples.