Spacing effects in picture memory

Three experiments were conducted to capitalize on the conclusion of Shaffer and Shiffrin (1972) that complex visual scenes are not rehearsed in testing the hypothesis that the effect of spacing on memory is due to rehearsal. In Experiment I, a list of vacation slides was presented in which both the number of repetitions and the spacing of repetitions were varied. Subsequent frequency judgments showed an effect of spacing much like that found using verbal materials. In Experiments II and III, effects of filled and unfilled spacing intervals were compared, and it was concluded that the spacing effect is primarily a function of the duration of the spacing interval. No evidence was found to support the notion that pictures are rehearsed. Rehearsal apparently cannot play the key role in an adequate, completely general explanation of the spacing effect.     

Content filtering human speech: A simple electronic system

The use of electronic bandpass filtering for content-masking speech samples in studies on expressive aspects of vocal behavior is discussed. A simple electronic filtering system, which can be built easily and which can be adopted readily for a variety of applications, is described.     

Effects of components of protection-motivation theory on adaptive and maladaptive coping with a health threat

How do people cope with a threat when they do not plan to adopt an adaptive, protective response? We explored this question by examining the effects of information about a health threat and two aspects of coping ability, self-efficacy and response efficacy, on two adaptive and five maladaptive coping strategies (e.g., avoidance, wishful thinking). The results disclosed that the high-threat condition energized all forms of coping; it did not differentially cue specific coping strategies. The critical factor in determining the specific strategies used was the coping information. The high-response-efficacy and high-self-efficacy conditions strengthened adaptive coping and did not foster any maladaptive coping. A supplementary path analysis revealed an intriguing pattern of relations, including the finding that the most maladaptive strategy was avoidant thinking, which simultaneously reduced fear of the threat and weakened intentions to adopt the adaptive response.     

The MRCI with juvenile detainees: optimizing performance or emphasizing ecological validity?

The Miranda Rights Comprehension Instruments (MRCI) are intended to be administered to legally involved youths in a setting free from distractions and stressors with the explicit goal of assessing the examinee's best understanding. However, marked disparities have been observed between juveniles' MRCI performance and their unassisted recall of a representative Miranda warning. We hypothesized that youths' very strong MRCI performance might be partially due to prompts and clarifications used whenever incomplete or ambiguous answers are provided. In this archival study, we systematically re‐scored three MRCI instruments from 231 legally involved youths to evaluate their original responses (i.e., non‐queried scoring). This approach is viewed as more ecologically valid because actual Miranda warnings are typically provided in a routine manner without assistance following each Miranda component. For the large majority of legally involved juveniles, only small differences were noted between standard and non‐queried scoring. However, some dramatic decrements were observed, especially on the Comprehension of Miranda Rights‐II (CMR‐II). More specifically, 15.7% of CMR‐II percentiles dropped precipitously by 60% or more, when using the non‐queried scores. The results are discussed within the context of optimized performances versus ecological validity as applied to Miranda evaluations.