Global parameter optimization for maximizing radioisotope detection probabilities at fixed false alarm rates

2011 ◽  
Vol 652 (1) ◽  
pp. 29-32 ◽  
Author(s):  
David Portnoy ◽  
Robert Feuerbach ◽  
Jennifer Heimberg
Keyword(s):  
False Alarm ◽  
Parameter Optimization ◽  
Global Parameter ◽  
Detection Probabilities ◽  
False Alarm Rates

scholarly journals Doorways do not always cause forgetting: a multimodal investigation

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Jessica McFadyen ◽  
Christopher Nolan ◽  
Ellen Pinocy ◽  
David Buteri ◽  
Oliver Baumann
Keyword(s):  
Working Memory ◽  
False Alarm ◽  
Memory Load ◽  
Real Life ◽  
Working Memory Load ◽  
Movement Data ◽  
Physical Environments ◽  
Series Of Experiments ◽  
False Alarm Rates ◽  
Location Updating

Abstract Background The ‘doorway effect’, or ‘location updating effect’, claims that we tend to forget items of recent significance immediately after crossing a boundary. Previous research suggests that such a forgetting effect occurs both at physical boundaries (e.g., moving from one room to another via a door) and metaphysical boundaries (e.g., imagining traversing a doorway, or even when moving from one desktop window to another on a computer). Here, we aimed to conceptually replicate this effect using virtual and physical environments. Methods Across four experiments, we measured participants’ hit and false alarm rates to memory probes for items recently encountered either in the same or previous room. Experiments 1 and 2 used highly immersive virtual reality without and with working memory load (Experiments 1 and 2, respectively). Experiment 3 used passive video watching and Experiment 4 used active real-life movement. Data analysis was conducted using frequentist as well as Bayesian inference statistics. Results Across this series of experiments, we observed no significant effect of doorways on forgetting. In Experiment 2, however, signal detection was impaired when participants responded to probes after moving through doorways, such that false alarm rates were increased for mismatched recognition probes. Thus, under working memory load, memory was more susceptible to interference after moving through doorways. Conclusions This study presents evidence that is inconsistent with the location updating effect as it has previously been reported. Our findings call into question the generalisability and robustness of this effect to slight paradigm alterations and, indeed, what factors contributed to the effect observed in previous studies.

A comparison of data obtained with different false-alarm rates.

1964 ◽  
Vol 71 (3) ◽  
pp. 243-246 ◽  
Author(s):  
Donald A. Norman
Keyword(s):  
False Alarm ◽  
False Alarm Rates

scholarly journals Effects of fixed- and varied-context repetition on associative recognition in amnesia

2010 ◽  
Vol 16 (4) ◽  
pp. 596-602 ◽  
Author(s):  
DANIEL L. GREENBERG ◽  
MIEKE VERFAELLIE
Keyword(s):  
False Alarm ◽  
Recognition Task ◽  
Associative Recognition ◽  
False Alarms ◽  
Study Phase ◽  
Repetition Condition ◽  
Context Condition ◽  
False Alarm Rates

AbstractThis study compared the effects of fixed- and varied-context repetition on associative recognition in amnesia. Controls and amnesic participants were presented with a set of three-word phrases. Each was presented three times. In the varied-context condition, the verb changed with each presentation; in the fixed-context condition, it remained constant. At test, participants performed an associative-recognition task in which they were shown pairs of words from the study phase and asked to distinguish between intact and recombined pairs. For corrected recognition (hits – false alarms), controls performed better in the varied-context than in the fixed-context repetition condition, whereas amnesic participants’ performance did not differ between conditions. Similarly, controls had lower false-alarm rates in the varied-context condition, but there was no significant effect of condition for the amnesic participants. Thus, varied-context repetition does not improve amnesic participants’ performance on a recollection-dependent associative-recognition task, possibly because the amnesic participants were unable to take advantage of the additional cues that the varied-context encoding condition provided. (JINS, 2010, 16, 596–602.)

Effects of Presentation Mode on Veridical and False Memory in Individuals with Intellectual Disability

2012 ◽  
Vol 117 (3) ◽  
pp. 183-193 ◽  
Author(s):  
Michael Carlin ◽  
Michael P. Toglia ◽  
Colleen Belmonte ◽  
Chiara DiMeglio
Keyword(s):  
Intellectual Disability ◽  
Best Practices ◽  
False Alarm ◽  
Presentation Mode ◽  
Visual Presentation ◽  
Work Environments ◽  
Mental Age ◽  
Auditory Recognition ◽  
Presentation Formats ◽  
False Alarm Rates

Abstract In the present study the effects of visual, auditory, and audio–visual presentation formats on memory for thematically constructed lists were assessed in individuals with intellectual disability and mental age–matched children. The auditory recognition test included target items, unrelated foils, and two types of semantic lures: critical related foils and related foils. The audio–visual format led to better recognition of old items and lower false-alarm rates for all foil types. Those with intellectual disability had higher false-alarm rates for all foil types and experienced particular difficulty discriminating presented items from those most strongly activated internally during acquisition (i.e., critical foils). Results are consistent with the activation-monitoring framework and fuzzy-trace theory and inform best practices for designing visual supports to maximize performance in educational and work environments.

scholarly journals Predicting individual false alarm rates and signal detection theory: A role for remembering

2000 ◽  
Vol 28 (8) ◽  
pp. 1347-1356 ◽  
Author(s):  
Ian G. Dobbins ◽  
Wayne Khoe ◽  
Andrew P. Yonelinas ◽  
Neal E. A. Kroll
Keyword(s):  
Signal Detection ◽  
False Alarm ◽  
Signal Detection Theory ◽  
Detection Theory ◽  
False Alarm Rates
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