scholarly journals Within-person variability in men’s facial width-to-height ratio

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e1801 ◽  
Author(s):  
Robin S.S. Kramer
Keyword(s):  
Facial Expressions ◽  
Effect Size ◽  
Focal Length ◽  
Effect Sizes ◽  
Emotional Expressions ◽  
Head Pose ◽  
Height Ratio ◽  
Camera Parameters ◽  
Study Designs ◽  
The Relationship

Background.In recent years, researchers have investigated the relationship between facial width-to-height ratio (FWHR) and a variety of threat and dominance behaviours. The majority of methods involved measuring FWHR from 2D photographs of faces. However, individuals can vary dramatically in their appearance across images, which poses an obvious problem for reliable FWHR measurement.Methods.I compared the effect sizes due to the differences between images taken with unconstrained camera parameters (Studies 1 and 2) or varied facial expressions (Study 3) to the effect size due to identity, i.e., the differences between people. In Study 1, images of Hollywood actors were collected from film screenshots, providing the least amount of experimental control. In Study 2, controlled photographs, which only varied in focal length and distance to camera, were analysed. In Study 3, images of different facial expressions, taken in controlled conditions, were measured.Results.Analyses revealed that simply varying the focal length and distance between the camera and face had a relatively small effect on FWHR, and therefore may prove less of a problem if uncontrolled in study designs. In contrast, when all camera parameters (including the camera itself) are allowed to vary, the effect size due to identity was greater than the effect of image selection, but the ranking of the identities was significantly altered by the particular image used. Finally, I found significant changes to FWHR when people posed with four of seven emotional expressions in comparison with neutral, and the effect size due to expression was larger than differences due to identity.Discussion.The results of these three studies demonstrate that even when head pose is limited to forward facing, changes to the camera parameters and a person’s facial expression have sizable effects on FWHR measurement. Therefore, analysing images that fail to constrain some of these variables can lead to noisy and unreliable results, but also relationships caused by previously unconsidered confounds.

A-53 The Relationship between Age and TMT-A Performance in Patients with Heart Failure

2021 ◽  
Vol 36 (6) ◽  
pp. 1095-1095
Author(s):  
Nicholas S Lackey ◽  
Natasha Nemanim ◽  
Alexander O Hauson ◽  
Eric J Connors ◽  
Anna Pollard ◽  
...  
Keyword(s):  
Heart Failure ◽  
Effect Size ◽  
Significant Proportion ◽  
Effect Sizes ◽  
Medium Effect ◽  
Future Research ◽  
Medium Effect Size ◽  
Meta Regression ◽  
The Impact ◽  
The Relationship

Abstract Objective A previous meta-analysis utilized the Trail Making Test A (TMT-A) to measure the impact of heart failure (HF) on attention. A near medium effect size with moderate heterogeneity was observed, the HF group performed worse than healthy controls (HC). This study explores if the age of the HF group moderates differences in the performance of individuals with HF versus HC on TMT-A. Data Selection Two researchers searched eight databases, extracted data, and calculated effect sizes as part of a larger study. Inclusion criteria were: (a) adults with HF (New York Heart Association severity II or higher), (b) comparison to a HC group, (c) standardized neuropsychological/cognitive testing, and (d) adequate data to calculate effect sizes. Exclusion criteria were: (a) participants had other types of major organ failure, (b) the article was not in English, or (c) there was a risk of sample overlap with another included study. A total of six articles were included in this sub-study (Total HF n = 602 and HC n = 342). The unrestricted maximum likelihood computational model was used for the meta-regression. Data Synthesis Studies included in the meta-regression evidenced a statistically significant medium effect size estimate with moderate heterogeneity (k = 6, g = 0.636, p < 0.001, I2 = 56.85%). The meta-regression was statistically significant (slope = −0.0515, p = 0.0016, Qmodel = 9.86, df = 1, p = 0.0016). Conclusions Individuals with HF performed worse on the TMT-A than HC. Age accounted for a significant proportion of the observed heterogeneity in the meta-regression. Future research should examine the relationship of age on cognition in individuals with HF.

The Relationship Between Sample Sizes and Effect Sizes in Systematic Reviews in Education

2009 ◽  
Vol 31 (4) ◽  
pp. 500-506 ◽  
Author(s):  
Robert Slavin ◽  
Dewi Smith
Keyword(s):  
Sample Size ◽  
Effect Size ◽  
Secondary Mathematics ◽  
Significant Negative Correlation ◽  
Small Sample ◽  
Effect Sizes ◽  
Sample Sizes ◽  
Large Samples ◽  
Small Sample Sizes ◽  
The Relationship

Research in fields other than education has found that studies with small sample sizes tend to have larger effect sizes than those with large samples. This article examines the relationship between sample size and effect size in education. It analyzes data from 185 studies of elementary and secondary mathematics programs that met the standards of the Best Evidence Encyclopedia. As predicted, there was a significant negative correlation between sample size and effect size. The differences in effect sizes between small and large experiments were much greater than those between randomized and matched experiments. Explanations for the effects of sample size on effect size are discussed.

scholarly journals The Association of Cognitive Ability with Right–Wing Ideological Attitudes and Prejudice: A Meta–Analytic Review

2015 ◽  
Vol 29 (6) ◽  
pp. 599-621 ◽  
Author(s):  
Emma Onraet ◽  
Alain Van Hiel ◽  
Kristof Dhont ◽  
Gordon Hodson ◽  
Mark Schittekatte ◽  
...  
Keyword(s):  
Cognitive Ability ◽  
Effect Size ◽  
Model Building ◽  
Effect Sizes ◽  
Right Wing ◽  
Average Effect ◽  
Average Effect Size ◽  
Analytic Review ◽  
Ideological Attitudes ◽  
The Relationship

The cognitive functioning of individuals with stronger endorsement of right–wing and prejudiced attitudes has elicited much scholarly interest. Whereas many studies investigated cognitive styles, less attention has been directed towards cognitive ability. Studies investigating the latter topic generally reveal lower cognitive ability to be associated with stronger endorsement of right–wing ideological attitudes and greater prejudice. However, this relationship has remained widely unrecognized in literature. The present meta–analyses revealed an average effect size of r = −. 20 [95% confidence interval (95% CI) [−0.23, −0.17]; based on 67 studies, N = 84 017] for the relationship between cognitive ability and right–wing ideological attitudes and an average effect size of r = −.19 (95% CI [−0.23, −0.16]; based on 23 studies, N = 27 011) for the relationship between cognitive ability and prejudice. Effect sizes did not vary significantly across different cognitive abilities and sample characteristics. The effect strongly depended on the measure used for ideological attitudes and prejudice, with the strongest effect sizes for authoritarianism and ethnocentrism. We conclude that cognitive ability is an important factor in the genesis of ideological attitudes and prejudice and thus should become more central in theorizing and model building. Copyright © 2015 European Association of Personality Psychology

Emotion and Cognition in Infancy: Facial Expressions during Contingency Learning

1989 ◽  
Vol 12 (2) ◽  
pp. 221-237 ◽  
Author(s):  
Margaret Wolan Sullivan ◽  
Michael Lewis
Keyword(s):  
Facial Expressions ◽  
Cognitive Processes ◽  
Emotional Expressions ◽  
Contingency Learning ◽  
Control Subjects ◽  
Young Infants ◽  
The Relationship

Facial expressions of 4and 6-month-old infants were coded at several points during contingency learning and contrasted with those of control subjects. Many different emotional expressions were observed and distinctive patterns of expression characterised contingent but not control subjects. Results indicated that emotion and contingency learning are closely linked in young infants and support a model of emotion and cognition as interdependent processes. Facial behaviours during learning may be valuable in conceptualising the relationship between emotional and cognitive processes in infancy.

scholarly journals Persons as Effect Sizes

2020 ◽  
Vol 3 (4) ◽  
pp. 443-455
Author(s):  
James W. Grice ◽  
Eliwid Medellin ◽  
Ian Jones ◽  
Samantha Horvath ◽  
Hailey McDaniel ◽  
...  
Keyword(s):  
Relative Risk ◽  
Effect Size ◽  
Effect Sizes ◽  
Group Differences ◽  
Theoretical Expectation ◽  
Basic Meaning ◽  
Average Group ◽  
Study Designs

Traditional indices of effect size are designed to answer questions about average group differences, associations between variables, and relative risk. For many researchers, an additional, important question is, “How many people in my study behaved or responded in a manner consistent with theoretical expectation?” We show how the answer to this question can be computed and reported as a straightforward percentage for a wide variety of study designs. This percentage essentially treats persons as an effect size, and it can easily be understood by scientists, professionals, and laypersons alike. For instance, imagine that in addition to d or η2, a researcher reports that 80% of participants matched theoretical expectation. No statistical training is required to understand the basic meaning of this percentage. By analyzing recently published studies, we show how computing this percentage can reveal novel patterns within data that provide insights for extending and developing the theory under investigation.

Effect Sizes

2009 ◽  
Vol 217 (1) ◽  
pp. 6-14 ◽  
Author(s):  
Ralph L. Rosnow ◽  
Robert Rosenthal
Keyword(s):  
Confidence Intervals ◽  
Effect Size ◽  
Research Finding ◽  
Systematic Approach ◽  
Effect Sizes ◽  
Statistical Procedures ◽  
Difference Type ◽  
Independent Variable ◽  
The Difference ◽  
The Relationship

The effect size (ES) is the magnitude of a study outcome or research finding, such as the strength of the relationship obtained between an independent variable and a dependent variable. Two types of ES indicators are sampled here: the difference-type and the correlational (or r-type). Both are well suited to situations in which there are two groups or two conditions, whereas the r-type, used in association with focused statistical procedures (contrasts), is also ideal in situations where there are more than two groups or conditions and there are predicted overall patterns to be evaluated. Also discussed are procedures for computing confidence intervals and null-counternull intervals as well as a systematic approach to comparing and combining competing predictions expressed in the form of contrast weights and ES indicators.

scholarly journals A Meta-Analytic Investigation of the Relationship Between Emotional Intelligence and Emotional Manipulation

SAGE Open ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 215824402097161
Author(s):  
Nguyen Nhu Ngoc ◽  
Nham Phong Tuan ◽  
Yoshi Takahashi
Keyword(s):  
Emotional Intelligence ◽  
Effect Size ◽  
Negative Relationship ◽  
Moderating Effect ◽  
Effect Sizes ◽  
Dark Side ◽  
Analytic Investigation ◽  
The Relationship

This study examines a possible dark side of emotional intelligence (EI). Specifically, a meta-analytic investigation of 5,687 participants was conducted to examine the relationship between EI and emotional manipulation. The findings revealed that self-reported ability-based EI was positively correlated to non-prosocial emotional manipulation (as measured by the Emotional Manipulation Scale), with a 0.10 effect size. Whereas, a negative relationship emerged between self-reported trait EI and non-prosocial emotional manipulation (as measured by the Worsen factor of the Managing Emotions of Others Scale [MEOS]), with a −0.16 effect size. Moreover, self-reported trait-based EI was positively correlated with prosocial emotional manipulation (as measured by the Enhance and Divert factors of the MEOS), with effect sizes of 0.40 and 0.34, respectively. Furthermore, gender had a moderating effect on the relationship between self-reported ability-based EI and non-prosocial emotional manipulation; this relationship was stronger among males than females. We discuss the implications of these findings across academic and practice settings.

The Gender Stereotyping of Emotions

2000 ◽  
Vol 24 (1) ◽  
pp. 81-92 ◽  
Author(s):  
E. Ashby Plant ◽  
Janet Shibley Hyde ◽  
Dacher Keltner ◽  
Patricia G. Devine
Keyword(s):  
Facial Expressions ◽  
Social Relations ◽  
Gender Stereotypes ◽  
Gender Stereotyping ◽  
Emotional Expressions ◽  
Expressive Behavior ◽  
Socialization Of Emotion ◽  
Consistent Manner ◽  
The Relationship

Three studies documented the gender stereotypes of emotions and the relationship between gender stereotypes and the interpretation of emotionally expressive behavior. Participants believed women experienced and expressed the majority of the 19 emotions studied (e.g., sadness, fear, sympathy) more often than men. Exceptions included anger and pride, which were thought to be experienced and expressed more often by men. In Study 2, participants interpreted photographs of adults' ambiguous anger/sadness facial expressions in a stereotype-consistent manner, such that women were rated as sadder and less angry than men. Even unambiguous anger poses by women were rated as a mixture of anger and sadness. Study 3 revealed that when expectant parents interpreted an infant's ambiguous anger/sadness expression presented on videotape only high-stereotyped men interpreted the expression in a stereotype-consistent manner. Discussion focuses on the role of gender stereotypes in adults' interpretations of emotional expressions and the implications for social relations and the socialization of emotion.

New Camera Parameters Calibration Method of Binocular Vision System

2013 ◽  
Vol 712-715 ◽  
pp. 2372-2377
Author(s):  
Hong E Ren ◽  
Si Li
Keyword(s):  
Binocular Vision ◽  
Theoretical Basis ◽  
Simulation Experiment ◽  
Vision System ◽  
Focal Length ◽  
Calibration Method ◽  
Camera Parameters ◽  
Relationship Of ◽  
The Relationship ◽  
Binocular Vision System

About the key problems of the binocular vision system design which was used to video log examining, and according to the binocular parallax theory and triangle measuring theory, the paper researched the basic principle of camera imaging, proposed the camera parameters calibration method that could determine the best placed baseline distance of two cameras and the camera focal length together, inferred the relationship of the best baseline distance and the camera focal length by analyzing to many groups calibration results. The simulation experiment results show that this method is simple, practical, and has a high precision, provides a theoretical basis for design of tow cameras positions in the binocular vision system.

Are Gifted Students Perfectionistic? A Meta-Analysis

2020 ◽  
Vol 43 (3) ◽  
pp. 227-251 ◽  
Author(s):  
Uzeyir Ogurlu
Keyword(s):  
Effect Size ◽  
Grade Level ◽  
Meta Analysis ◽  
Gifted Students ◽  
Effect Sizes ◽  
Moderator Analysis ◽  
Quantitative Studies ◽  
Significant Difference ◽  
The Relationship ◽  
Significant Moderator

There is a rich literature on perfectionism among gifted individuals, but the results of these individual studies are ambiguous. The present meta-analysis aimed to clarify the nature of the relationship between perfectionism and giftedness by focusing on quantitative studies that compared the perfectionism levels of gifted and nongifted students. Hedge’s unbiased g was used as the effect size metric and a three-level multilevel meta-analytic approach taken to control for dependency among the effect sizes obtained from the same study. The analyses used 63 effect sizes from 14 published studies that indicated there was no significant difference between gifted and nongifted students on perfectionism. The analyses also focused on two moderators: dimensions of perfectionism and grade level. The moderator analysis indicated that perfectionism dimensions were a significant moderator. Gifted students, although not significantly, outscored their nongifted peers on perfectionistic strivings but rated lower on perfectionistic concerns.

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