scholarly journals Meta-analyzing dependent correlations with correction for artifacts that multiplicatively attenuate the true correlation

2018 ◽  
Vol 51 (2) ◽  
pp. 793-810
Author(s):  
Shu Fai Cheung ◽  
Darius K.-S. Chan ◽  
Rong Wei Sun
Keyword(s):  
True Correlation

Employing Automatic Approach and Avoidance Tendencies for the Assessment of Implicit Personality Self-Concept

2006 ◽  
Vol 53 (1) ◽  
pp. 69-76 ◽  
Author(s):  
Konrad Schnabel ◽  
Rainer Banse ◽  
Jens Asendorpf
Keyword(s):  
Role Play ◽  
Self Concept ◽  
Control Group ◽  
Implicit Association ◽  
Approach And Avoidance ◽  
Position Effects ◽  
Indirect Measures ◽  
Implicit Personality ◽  
Experimental Group ◽  
True Correlation

A new chronometric procedure, the Implicit Association Procedure (IAP), was adapted to assess the implicit personality self-concept of shyness. A sample of 300 participants completed a shyness-inducing role play and, before or after the role play, a shyness IAP, a shyness Implicit Association Test (IAT), and direct self-ratings. The experimental group was instructed to fake nonshyness. The control group did not receive this instruction. IAT and IAP were unaffected by position effects, and were less susceptible to faking than direct self-ratings with regard to mean levels and correlates. Under faking, correlations between direct and indirect measures decreased, and direct but not indirect measures showed higher correlations with social desirability and lower correlations with observed shyness. Despite many similarities, the true correlation between IAT and IAP was estimated only .61, indicating high method-specific variance in both procedures. The findings suggest that indirect measures are more robust against faking than traditional self-ratings but do not yet meet psychometric criteria for practical assessment purposes.

scholarly journals LANGUAGE DICHOTOMY OF LANGUAGE AND WORD STYLISTICS

2021 ◽  
Vol 74 (4) ◽  
pp. 38-44
Author(s):  
N. Amirzhanova ◽  
Keyword(s):  
Formal System ◽  
Social Consciousness ◽  
Social Phenomenon ◽  
Speech Styles ◽  
The Social ◽  
New Interpretation ◽  
Cognitive Foundations ◽  
Pragmatic Aspects ◽  
True Correlation ◽  
Comprehensive Study

The study of language as a social phenomenon in its ontological, epistemological, and pragmatic aspects is considered important at a time when language is gaining special applied significance. One of the main directions of modern linguistics is to consider the language phenomenon as a means of communication used not only within the formal system, but also in the social environment. In the theory of communication, along with other types of language variability, there is a need for a systematic, comprehensive study of types of functional stylistics within the above-mentioned areas. Because in order to recognize the true correlation between the types of language activity and social consciousness, to distinguish between language and speech styles formed in accordance with the system of knowledge in the minds of the language personality and the collective, it is necessary to identify the linguistic and cognitive foundations of stylistics and make a new interpretation. This determines the correlation between the cultural-intellectual, communicative-pragmatic potential of the language and the metacognitive abilities of linguists, the linguistic-cognitive foundations of language and speech styles.

scholarly journals Harga Diri dan Adiksi Internet: Tinjauan Meta-Analisis

2019 ◽  
Vol 27 (1) ◽  
pp. 70 ◽  
Author(s):  
Wahyu Rahardjo
Keyword(s):  
Social Relationships ◽  
Internet Addiction ◽  
Deviant Behavior ◽  
Sampling Error ◽  
Meta Analysis ◽  
Self Esteem ◽  
The Internet ◽  
Men And Women ◽  
Analysis Study ◽  
True Correlation

The aim of this meta-analysis study is to figure out the true correlation between self-esteem and internet addiction. This meta-analysis uses 159 studies from 40 scientific articles from the year of 2005-2018 and involved in 120.825 participants. Correction for the two artifacts studied in this meta-analysis first is sampling error, and the second one is measurement error. The results support the hypothesis and show some similar findings whereas the true correlations from the groups confirm previous researches that self-esteem has a negative correlation to internet addiction. The strongest correlation found in adolescence group followed by men and women, all participant, also students and college students groups. However, these findings show that the internet accommodates individuals with negative self-esteem to build online social relationships and fulfilling their communication and pleasure needs and makes them easier committed to deviant behavior such as internet addiction.

scholarly journals Aberrant phyllotactic patterns in cones of some conifers: a quantitative study

2015 ◽  
Vol 84 (2) ◽  
pp. 261-265 ◽  
Author(s):  
Veronika Fierz
Keyword(s):  
Quantitative Study ◽  
Golden Ratio ◽  
Pinus Nigra ◽  
Larix Decidua ◽  
Black Pine ◽  
Single Tree ◽  
Individual Trees ◽  
True Correlation

The scale patterns of 6000 cones from one single tree of <em>Pinus nigra</em> Arn. have been examined. Apart from the main Fibonacci pattern with 8 and 13 parastichies, nine aberrant spiral patterns with Fibonacci-type sequences have been found. They are quite rare and occur with different frequencies. The parastichy quotient 8/13 of the prevalent pattern is very close to the golden ratio 0.618. In case of the black pine  it appeared that the greater the deviation of the parastichy quotient <em>m</em>/<em>n</em> from 0.618, the rarer the pattern. Similar results obtained for the sample of 1506 cones collected from three individual trees of larch (<em>Larix decidua</em> Mill.) suggest a true correlation between the frequency of a pattern and the deviation of its parastichy quotient from the golden ratio.

scholarly journals Dynamic response of some atoms: Many-body calculations

2005 ◽  
Vol 3 (2) ◽  
pp. 129-140 ◽  
Author(s):  
Aleksandar Tancic ◽  
M. Nikolic
Keyword(s):  
Random Phase Approximation ◽  
Random Phase ◽  
Atomic Interaction ◽  
Correlation Effects ◽  
Many Body ◽  
Hartree Fock ◽  
Many Body Theory ◽  
Correlation Potential ◽  
Body Theory ◽  
True Correlation

The frequency-dependent polarizability in the Hartree-Fock (HF) approximation has been corrected for true correlation effects by means of many-body theory. The polarizability has been computed in the Random Phase Approximation with Exchange (RPAE) for He, Ar Xe, Kr, Li, Ca through the second (and some higher) order in the correlation potential. With this polarizability as input we obtained the values of some atomic interaction constants.

Correlations between microbial parameters from water samples: expectations and reality

2001 ◽  
Vol 43 (12) ◽  
pp. 19-22 ◽  
Author(s):  
H. E. Tillett ◽  
J. Sellwood ◽  
N. F. Lightfoot ◽  
P. Boyd ◽  
S. Eaton
Keyword(s):  
Water Samples ◽  
Natural Variation ◽  
Single Parameter ◽  
Pollution Levels ◽  
Classical Statistics ◽  
Parametric Statistics ◽  
Asking Questions ◽  
The Relationship ◽  
Study Plan ◽  
True Correlation

Data which are collected in order to estimate the correlation between parameters must be analysed with caution. Classical statistics of correlation are often inappropriate. The “r” statistic is very easily distorted by non-Normal data. Non-parametric statistics can be helpful. The interpretation and usefulness of the estimates of correlation will depend on the study plan. If water samples come from disparate sources (e.g. upstream or downstream from sewage outlets) then parameters A and B may occur in their highest and lowest numbers according to how close the samples were to contamination sources thus correlating closely. However, if all samples come from sources with similar pollution levels then plots of A and B will show considerable scatter and apparently little correlation. So what is the relationship between A and B? An example of “perfect” correlation, as demonstrated by replicate counts of a single parameter from split samples, gave an r value of only 0.63 (ρ = 0.62) due to random variation in numbers of organisms between the two halves of the sample. Thus large amounts of data are needed for studying true correlation because relationships between parameters are embedded in the natural variation. This also illustrated that Standards for a single parameter can be “passed” or “failed” by two halves of the same sample. Study design is clearly of fundamental importance. Consideration must be given to the appropriate way of asking questions about correlation between different parameters.

Considering the Effects of Nonresponse on Correlations Between Surveyed Variables

2015 ◽  
Vol 14 (2) ◽  
pp. 91-103 ◽  
Author(s):  
Eric D. Heggestad ◽  
Steven Rogelberg ◽  
Adrian Goh ◽  
Frederick L. Oswald
Keyword(s):  
Simulation Study ◽  
External Validity ◽  
Frame Of Reference ◽  
Population Means ◽  
It Impacts ◽  
Organizational Surveys ◽  
Vexing Problem ◽  
True Correlation

Nonresponse to organizational surveys is a vexing problem. Although scholars have a reasonable understanding of how systematic nonresponse influences estimates of population means, they are likely to have less context for understanding how it impacts correlations. We present the results of a simulation study designed to provide a frame of reference for understanding the extent to which systematic nonresponse can bias observed correlations between surveyed variables. Although there were cases where notable levels of bias were observed in the correlations, the majority of situations simulated resulted in mean observed correlations that were within .05 of the true correlation. The variety of situations simulated allows researchers to evaluate the external validity of observed correlations in their data – a critical goal for survey researchers in practice and academics.

Vigabatrin and psychosis: is there a true correlation?

1997 ◽  
Vol 95 (3) ◽  
pp. 189-190 ◽  
Author(s):  
P. Veggiotti ◽  
G. De Agostini ◽  
P. L. Baldi ◽  
C. Muzio ◽  
G. Lanzi
Keyword(s):  
True Correlation
Sign in / Sign up

Export Citation Format

Share Document