scholarly journals No effect of multi-axis dot pattern symmetry on subjective duration

PLoS ONE ◽  
2020 ◽  
Vol 15 (12) ◽  
pp. e0238554
Author(s):  
Alexis David James Makin ◽  
Afzal Rahman ◽  
Marco Bertamini
Keyword(s):  
Time Perception ◽  
Statistical Power ◽  
Subjective Duration ◽  
Null Result ◽  
Actual Duration ◽  
Ceiling Effects ◽  
File Drawer

Previous work has shown that symmetrical stimuli are judged as lasting longer than asymmetrical ones, even when actual duration is matched. This effect has been replicated with different methods and stimuli types. We aimed to a) replicate the effect of symmetry on subjective duration, and b) assess whether it was further modulated by the number of symmetrical axes. There was no evidence for either effect. This null result cannot be explained by reduced statistical power or enhanced floor or ceiling effects. There is no obvious stimulus-based explanation either. However, we are mindful of the reproducibility crisis and file drawer problems in psychology. Other symmetry and time perception researchers should be aware of this null result. One possibility is that the effect of symmetry on subjective duration is limited to very specific experimental paradigms.

scholarly journals A failure to replicate the effect of visual symmetry on subjective duration

2020 ◽  
Author(s):  
Alexis D.J. Makin ◽  
Afzal Rahman ◽  
Marco Bertamini
Keyword(s):  
Time Perception ◽  
Statistical Power ◽  
Subjective Duration ◽  
Null Result ◽  
Actual Duration ◽  
Ceiling Effects ◽  
The Uk ◽  
File Drawer

AbstractPrevious work has shown that symmetrical or regular stimuli are judged as lasting longer than asymmetrical or irregular ones, even when actual duration is matched. This effect has been replicated with different methods and stimuli types, both in the UK and Japan. We aimed to a) replicate the effect of symmetry on subjective duration, and b) assess whether it was further modulated by the number of symmetrical axes. There was no evidence for either effect. This null result cannot be explained by reduced statistical power or enhanced floor or ceiling effects. There is no obvious stimulus-based explanation either. However, we are mindful of the reproducibility crisis and file drawer problems in psychology. Other symmetry and time perception researchers should be aware of this null result.

scholarly journals The PROMIS of Better Outcome Assessment: Responsiveness, Floor and Ceiling Effects, and Internet Administration

2011 ◽  
Vol 38 (8) ◽  
pp. 1759-1764 ◽  
Author(s):  
JAMES FRIES ◽  
MATTHIAS ROSE ◽  
ESWAR KRISHNAN
Keyword(s):  
Statistical Power ◽  
Computerized Adaptive Testing ◽  
Patient Reported Outcome ◽  
Measurement Information ◽  
Sf 36 ◽  
Patient Reported ◽  
Ceiling Effects ◽  
Computer Based ◽  
One Year ◽  
Longitudinal Examination

Objective.Use of item response theory (IRT) and, subsequently, computerized adaptive testing (CAT), under the umbrella of the NIH-PROMIS initiative (National Institutes of Health – Patient-Reported Outcomes Measurement Information System), to bring strong new assets to the development of more sensitive, more widely applicable, and more efficiently administered patient-reported outcome (PRO) instruments. We present data on current progress in 3 crucial areas: floor and ceiling effects, responsiveness to change, and interactive computer-based administration over the Internet.Methods.We examined nearly 1000 patients with rheumatoid arthritis and related diseases in a series of studies including a one-year longitudinal examination of detection of change; compared responsiveness of the Legacy SF-36 and HAQ-DI instruments with IRT-based instruments; performed a randomized head-to-head trial of 4 modes of item administration; and simulated the effect of lack of floor and ceiling items upon statistical power and sample sizes.Results.IRT-based PROMIS instruments are more sensitive to change, resulting in the potential to reduce sample size requirements substantially by up to a factor of 4. The modes of administration tested did not differ from each other in any instance by more than one-tenth of a standard deviation. Floor and ceiling effects greatly reduce the number of available subjects, particularly at the ceiling.Conclusion.Failure to adequately address floor and ceiling effects, which determine the range of an instrument, can result in suboptimal assessment of many patients. Improved items, improved instruments, and computer-based administration improve PRO assessment and represent a fundamental advance in clinical outcomes research.

scholarly journals Examining publication bias – A simulation-based evaluation of statistical tests on publication bias

2017 ◽  
Author(s):  
Andreas Schneck
Keyword(s):  
Publication Bias ◽  
Statistical Power ◽  
Scientific Misconduct ◽  
Statistical Tests ◽  
Research Problem ◽  
Research Problems ◽  
Repeated Analysis ◽  
Meta Analyses ◽  
Effect Heterogeneity ◽  
File Drawer

Background Publication bias is a form of scientific misconduct. It threatens the validity of research results and the credibility of science. Although several tests on publication bias exist, no in-depth evaluations are available that suggest which test to use for the specific research problem. Methods In the study at hand four tests on publication bias, Egger’s test (FAT), p-uniform, the test of excess significance (TES), as well as the caliper test, were evaluated in a Monte Carlo simulation. Two different types of publication bias, as well as its degree (0%, 50%, 100%), were simulated. The type of publication bias was defined either as file-drawer, meaning the repeated analysis of new datasets, or p-hacking, meaning the inclusion of covariates in order to obtain a significant result. In addition, the underlying effect (β = 0, 0.5, 1, 1.5), effect heterogeneity, and the number of observations in the simulated primary studies (N =100, 500), as well as in the number of observations for the publication bias tests (K =100, 1000), were varied. Results All tests evaluated were able to identify publication bias both in the file-drawer and p-hacking condition. The false positive rates were, with the exception of the 15%- and 20%-caliper test, unbiased. The FAT had the largest statistical power in the file-drawer conditions, whereas under p-hacking the TES was, except under effect heterogeneity, slightly better. The caliper test was, however, inferior to the other tests under effect homogeneity and had a decent statistical power only in conditions with 1000 primary studies. Discussion The FAT is recommended as a test for publication bias in standard meta-analyses with no or only small effect heterogeneity. If no clear direction of publication bias is suspected the TES is the first alternative to the FAT. The 5%-caliper tests is recommended under conditions of effect heterogeneity, which may be found if publication bias is examined in a discipline-wide setting when primary studies cover different research problems.

scholarly journals The Role of Trust in the Social Heuristics Hypothesis

2018 ◽  
Author(s):  
Andres Montealegre ◽  
William Jimenez-Leal
Keyword(s):  
Statistical Power ◽  
Open Science ◽  
Equivalence Testing ◽  
Future Directions ◽  
Online Study ◽  
The United Kingdom ◽  
Null Result ◽  
The Social ◽  
Science Framework

According to the social heuristics hypothesis, people intuitively cooperate or defect depending on which behavior is beneficial in their interactions. If cooperation is beneficial, people intuitively cooperate, but if defection is beneficial, they intuitively defect. However, deliberation promotes defection. Here, we tested two novel predictions regarding the role of trust in the social heuristics hypothesis. First, whether trust promotes intuitive cooperation. Second, whether preferring to think intuitively or deliberatively moderates the effect of trust on cooperation. In addition, we examined whether deciding intuitively promotes cooperation, compared to deciding deliberatively. To evaluate these predictions, we conducted a lab study in Colombia and an online study in the United Kingdom (N = 1,066; one study was pre-registered). Unexpectedly, higher trust failed to promote intuitive cooperation, though higher trust promoted cooperation. In addition, preferring to think intuitively or deliberatively failed to moderate the effect of trust on cooperation, although preferring to think intuitively increased cooperation. Moreover, deciding intuitively failed to promote cooperation, and equivalence testing confirmed that this null result was explained by the absence of an effect, rather than a lack of statistical power (equivalence bounds: d = -0.26 and 0.26). An intuitive cooperation effect emerged when non-compliant participants were excluded, but this effect could be due to selection biases. Taken together, most results failed to support the social heuristics hypothesis. We conclude by discussing implications, future directions, and limitations. The materials, data, and code are available on the Open Science Framework (https://osf.io/939jv/).

scholarly journals Examining publication bias – A simulation-based evaluation of statistical tests on publication bias

2017 ◽  
Author(s):  
Andreas Schneck
Keyword(s):  
Publication Bias ◽  
Statistical Power ◽  
Scientific Misconduct ◽  
Statistical Tests ◽  
Research Problem ◽  
Research Problems ◽  
Repeated Analysis ◽  
Meta Analyses ◽  
Effect Heterogeneity ◽  
File Drawer

Background Publication bias is a form of scientific misconduct. It threatens the validity of research results and the credibility of science. Although several tests on publication bias exist, no in-depth evaluations are available that suggest which test to use for the specific research problem. Methods In the study at hand four tests on publication bias, Egger’s test (FAT), p-uniform, the test of excess significance (TES), as well as the caliper test, were evaluated in a Monte Carlo simulation. Two different types of publication bias, as well as its degree (0%, 50%, 100%), were simulated. The type of publication bias was defined either as file-drawer, meaning the repeated analysis of new datasets, or p-hacking, meaning the inclusion of covariates in order to obtain a significant result. In addition, the underlying effect (β = 0, 0.5, 1, 1.5), effect heterogeneity, and the number of observations in the simulated primary studies (N =100, 500), as well as in the number of observations for the publication bias tests (K =100, 1000), were varied. Results All tests evaluated were able to identify publication bias both in the file-drawer and p-hacking condition. The false positive rates were, with the exception of the 15%- and 20%-caliper test, unbiased. The FAT had the largest statistical power in the file-drawer conditions, whereas under p-hacking the TES was, except under effect heterogeneity, slightly better. The caliper test was, however, inferior to the other tests under effect homogeneity and had a decent statistical power only in conditions with 1000 primary studies. Discussion The FAT is recommended as a test for publication bias in standard meta-analyses with no or only small effect heterogeneity. If no clear direction of publication bias is suspected the TES is the first alternative to the FAT. The 5%-caliper tests is recommended under conditions of effect heterogeneity, which may be found if publication bias is examined in a discipline-wide setting when primary studies cover different research problems.

scholarly journals Formalin-induced pain prolongs sub- to supra-second time estimation in rats

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11002
Author(s):  
Xinhe Liu ◽  
Ning Wang ◽  
Jinyan Wang ◽  
Fei Luo
Keyword(s):  
Time Perception ◽  
Inflammatory Pain ◽  
Weber Fraction ◽  
Time Estimation ◽  
Saline Group ◽  
Time Range ◽  
Formalin Injection ◽  
Post Injection ◽  
Subjective Duration ◽  
Temporal Estimation

Background Temporal estimation can be influenced by pain, which is a complex psychological and physiological phenomenon. However, the time range in which perception is most sensitive to pain remains unclear. Methods In the present study, we explored the effects of acute inflammatory pain on time perception in the sub- to supra-second (0.6–2.4-s) and supra-second (2–8-s) ranges in rats. Plantar formalin injection was used to induce acute inflammatory pain, and a temporal bisection task was used to measure time perception. Task test sessions were held for five consecutive days (one per day): the day before injection (baseline), immediately after injection, and the three post-injection days. The point of subjective equality (PSE, which reflects the subjective duration) and Weber fraction (which reflects temporal sensitivity) were calculated and analysed. Results In the 0.6–2.4-s range, the PSE was significantly lower, indicating prolonged subjective duration, in the formalin group relative to the saline group (p = 0.049) immediately after injection. Formalin-induced pain also tended to lengthened time perception in the 0.6–2.4-s range on post-injection days 2 (p = 0.06) and 3 (p = 0.054). In the 2–8-s range, formalin injection did not affect the PSE or Weber fraction. Conclusions The enhanced effect of pain on temporal perception in the sub- to supra-second range is observed in this study and this effect is attenuated with the prolongation of estimated time, even in rats.

Distortions in Time Perception: How the Production Rate of Linguistic Stimuli Influences the Perception of Elapsed Time

2020 ◽  
Vol 8 (2) ◽  
pp. 162-176
Author(s):  
Miria N. Plastira ◽  
Marios N. Avraamides
Keyword(s):  
Production Rate ◽  
Time Perception ◽  
Significant Interaction ◽  
Internal Clock ◽  
Elapsed Time ◽  
Actual Duration ◽  
Sense Of Time ◽  
Slow Speech

In this study we examined whether the exposure to speed-altered audio clips of speech-like stimuli can distort systematically the subjective sense of time. Participants listened to stimuli of varying durations and speeds and reproduced their durations. Results revealed that both speed and actual duration influenced the length of reproduced durations. In particular, participants reproduced durations as longer when they listened to fast compared to slow speech-like stimuli of the same actual duration. In addition, the reproduced durations of long stimuli deviated more from their veridical durations compared to those of short stimuli. Notably, a significant interaction indicated that the effect of speed was greater for stimuli of short than of long actual durations. We argue that listening to fast speech-like stimuli speeds up the pacemaker component of the internal clock, leading to overestimation of the actual duration. The implications of these findings for the theories of time perception are discussed.

Structured Time and Subjective Acceleration of Time

1984 ◽  
Vol 59 (1) ◽  
pp. 335-336 ◽  
Author(s):  
Charles E. Joubert
Keyword(s):  
Time Perception ◽  
Free Time ◽  
Time Interval ◽  
Subjective Time ◽  
Subjective Duration ◽  
Subjective Change ◽  
Change Perceptions ◽  
The Individual

The present paper gives some evidence that differences in subjective time acceleration with aging are correlated with differences in the extent to which time is structured for the individual, as opposed to free time. Lemlich's 1975 hypothesis relating this speeding up of time to the subjective duration of the time interval was only partially supported by the evidence. Subjective change perceptions of happiness were not correlated significantly with this phenomenon of time perception.

scholarly journals Examining publication bias—a simulation-based evaluation of statistical tests on publication bias

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e4115 ◽  
Author(s):  
Andreas Schneck
Keyword(s):  
Publication Bias ◽  
Statistical Power ◽  
Scientific Misconduct ◽  
Statistical Tests ◽  
Simulation Based ◽  
Research Problems ◽  
Repeated Analysis ◽  
Meta Analyses ◽  
Effect Heterogeneity ◽  
File Drawer

Background Publication bias is a form of scientific misconduct. It threatens the validity of research results and the credibility of science. Although several tests on publication bias exist, no in-depth evaluations are available that examine which test performs best for different research settings. Methods Four tests on publication bias, Egger’s test (FAT), p-uniform, the test of excess significance (TES), as well as the caliper test, were evaluated in a Monte Carlo simulation. Two different types of publication bias and its degree (0%, 50%, 100%) were simulated. The type of publication bias was defined either as file-drawer, meaning the repeated analysis of new datasets, or p-hacking, meaning the inclusion of covariates in order to obtain a significant result. In addition, the underlying effect (β = 0, 0.5, 1, 1.5), effect heterogeneity, the number of observations in the simulated primary studies (N = 100, 500), and the number of observations for the publication bias tests (K = 100, 1,000) were varied. Results All tests evaluated were able to identify publication bias both in the file-drawer and p-hacking condition. The false positive rates were, with the exception of the 15%- and 20%-caliper test, unbiased. The FAT had the largest statistical power in the file-drawer conditions, whereas under p-hacking the TES was, except under effect heterogeneity, slightly better. The CTs were, however, inferior to the other tests under effect homogeneity and had a decent statistical power only in conditions with 1,000 primary studies. Discussion The FAT is recommended as a test for publication bias in standard meta-analyses with no or only small effect heterogeneity. If two-sided publication bias is suspected as well as under p-hacking the TES is the first alternative to the FAT. The 5%-caliper test is recommended under conditions of effect heterogeneity and a large number of primary studies, which may be found if publication bias is examined in a discipline-wide setting when primary studies cover different research problems.

Sign in / Sign up

Export Citation Format

Share Document