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Recent studies on this topic deal with more detailed questions, that are analysed using structural equation models (Deary et al., 2006). A main goal has been the identification of specific genes. No single genes have been found until today and Sternberg (2012) also points out that the concept of heritability itself is indirect and maybe inappropriate if ...


7

Table 1 of Fox and Rooney (2015) report this correlation between selfies posted on social networks and narcissim to be r = .19 in a sample of 800 U.S. men, (mean age = 29, SD = 6.5). I.e., the observed correlation was small in a general sense. But in the broader domain of personality-behaviour correlations, .19 is fairly moderate. Participants’ selfie ...


7

This is a weird one! Looks like your professor's on to something. Holmes' (2010) New Scientist article, "Why men are attracted to women with small feet" gives an interesting intro based on Atkinson and Rowe (2010), which was a rather hard-to-track-down poster (not that I've retrieved the original). They produced facial composites of eight women each based on ...


7

You might find Self Determination Theory interesting, which takes a detailed look the concept of motivation. Even if you don't explicitely mention it in your question, you seem to be refering to the difference between intrinsic and extrinsic motivation, which is a distinction that is traditionally made with respect to motivation. In SDT this is taken a ...


6

PCA or EFA: A standard approach to calculating a g factor would be to use principal components analysis (PCA) or exploratory factor analysis (EFA). Basically, you administer a broad battery of cognitive ability measures. Then you use these tests as variables in a PCA or EFA. This will partition the variance in the tests into a set of uncorrelated factors. ...


5

Although the idea that IQ only enables creativity "up to IQ 120" is widespread (and repeated in pop-psych books such as those of Gladwell etc.), large scale studies of giftedness reliably find that the IQ and creativity are associated even at the very highest-extremes of ability. IQ is linearly related to creative achievement across the range (Wai et al., ...


5

"There was a significantly higher level of plasma testosterone in the aggressive group as compared with the nonaggressive group or with the other two groups combined. The socially dominant group also had a significantly higher level of testosterone than the nonaggressive group." http://journals.lww.com/psychosomaticmedicine/Abstract/1974/11000/...


5

Can you suggest me better literature? Am I using the wrong concepts? Are the references provided above "sufficient"? I recommend you take a step back and ask yourself what your question is, and perhaps more importantly, why it is you're asking it. Only then will you have a better idea of what you consider sufficient. I am not satisfied with these ...


4

Reading people's faces to determine their character is called physiognomy. Some might downplay the idea that it is real but scientists are nowadays starting to accept that there may be a correlation between the shape of the face and characteristics. In fact, a recent study showed that men with a wide face tend to feel more powerful. The scientists from ...


4

Removal of noise can be done in various ways: Conventional filters: You could create a digital low-pass filter, such as a Chebyshev or Butterworth filter with a cut-off frequency at 30 Hz (filt or filtfilt function in Matlab). FFT-based filtering: FIR filters remove frequencies in the frequency domain. So first a Fourier transform is done and then the ...


4

Let me take the liberty of rephrasing some of the things you have mentioned. To be highly motivated , as per you, is starting a lot of things (more work), more excitement about new stuff and more efforts put in, but less follow through to completion maybe because a plan was not followed (more open ended stuff) ; efficiency, as per you is, doing less, but ...


4

A good, and very pertinent question. This speculative and blunt answer is based on the literature that I have studied as part of understanding behavior change. It is a simplification of the literature, but it should set a foundation that you could build on if you wanted to investigate further and develop a more nuanced view. Is religious affiliation ...


3

Is my approach in generating a distribution based on the samples' factor scores flawed? How do they do it in practice? I found this somewhat difficult to follow. But in general, you should be able to approximate a set of test scores using a multivariate normal distribution where the covariance matrix implies positive correlations between all tests. Some ...


3

At least among a sample of high-school students the dark tetrad correlations look like: So there's only a moderate correlation between narcissism and sadism (0.37), but it turned out to be strongest of the six (as commonly measured). However it was only the 2nd strongest after an oblique rotation, the psyhopathic-sadistic one "winning" by small margin (0.02)...


3

Yes the two theories are related, but the theories come from two different fields, cogintive science and sociology. First the definitions : In psychology and cognitive science, a schema (plural schemata or schemas) describes a pattern of thought or behavior that organizes categories of information and the relationships among them . Social ...


3

There is an update regarding the debate on Threshold Theory. From Jauk et al (2013) "The relationship between intelligence and creativity: New support for the threshold hypothesis by means of empirical breakpoint detection": One of the most prominent notions concerning the interplay between intelligence and creativity is the threshold hypothesis, which ...


3

People who are entitled tend to have a slower perception of time. In any given situation, a person can feel some level of entitlement. If a person is waiting in line for 10 minutes to check out groceries, he would experience that 10 minutes as passing by very slowly. On the other hand, if that same person was waiting 10 minutes to meet the President, he ...


2

N.B.: There are many varieties of "Stroop-like" tasks, which as a class are often called implicit association tests or IATs. Since those are likely to test attributes related to their specific construction, I have excluded them from this answer. There have been a variety of papers studying correlations of Stroop performance with other characteristics. ...


2

This is an illness, not a behavior, but schizophrenia is known to be correlated with high testosterone levels. Of course, as the article I linked to itself states: “However, as with most endocrine and mental illnesses, schizophrenia is multifaceted (genetic, environmental etc.)...” Of course this is just one example, but I always thought the ...


2

I haven't used BIS and BAS scales in my research, so I will only point out some general considerations. Correctness of your correlation analyses.: Double-check your data analysis. Maybe you missed a sign somewhere or you didn't encode some scale correctly. Interpretation of your correlation analyses. Significant correlation isn't that interesting. You ...


2

I would look at the research into natural abilities (including mechanical) being carried out by the Johnson O’Connor Research Foundation. Schmidt’s work, to my mind, is so broad and at population level. He basically posits that people with a higher IQ can basically do any job better than those with lower IQ. This is clearly nonsense. A high IQ lawyer, I ...


2

Lee and Ashton (2014) write: A few studies have directly examined the relations of the Dark Triad with the Honesty–Humility factor (as operationalized in the HEXACO Personality Inventory [–Revised]; HEXACO-PI[-R]). These investigations have found the low pole of the Honesty– Humility factor to be essentially identical to the common elementof the ...


2

TLDR The DSM-5 recognises the epidemiology of anxiety within PTSD, and the reason for the lack of genetic correlation is the fact that in PTSD, the anxiety is exogenous (environmental) rather than endogenous (biological via genes or other means). The debate The DSM-5, is the current version of the Diagnostic and Statistical Manual of Mental Disorders ...


1

The BOLD response is used in fMRI to provide a quantified measure of activation: https://en.wikipedia.org/wiki/Haemodynamic_response. It is based on the ratio of oxygenated vs. non-oxygenated blood, implying blood flow, and inferred to mean more processing or activation of those brain areas.


1

Actually, epidemiological studies are not as clear-cut, showing some overlap/comorbidity Spinhoven et al. (2014): Prevalence of 5-year recency PTSD among anxiety and depressive disorders was 9.2%, and comorbidity, in particular with major depression, was high (84.4%). Comorbidity was associated with female gender, all types of childhood trauma, ...


1

Both are from the same field of psychology, To be looked at separately not correlation, I do not believe that one theorie has precedent over the other theorie, they both have value in their own ways.


1

I have not yet found HEXACO domain estimates. I've had a lock through the main articles listed as references on http://hexaco.org/references but they seem to focus more on internal structure. However, the HEXACO-PI is quite similar to the the NEO-PI in terms of number of items per domain and the general approach to trait measurement. Thus, I would expect ...


1

Ehrhardt, A.A. (1978) states that A review of the behavioral effects of estrogen has to be divided on the basis of different time periods. During the critical phase of brain differentiation (which is species specific and takes place either before birth or neonatally), various sex hormones have long-term and permanent effects on behavior. Therefore, their ...


1

There's now a meta-analysis by Muris et al. (2017) which is a little more fine grained because also takes into account intercorrelation between these three; i.e. Muris et al. report effect sizes both uncorrected and corrected (for shared variance). There are somewhat obvious (at least for the uncorrected effects) conclusions that the authors draw: As ...


1

The Stroop test also correlates with age and education level (Van der Elst et al. 2006). When emotionally charged words are presented (Emo-Stroop), the Stroop task was found to correalte with high state anxiety.(Dresler et al 2009) You can find a review in "Secondary Influences on Neuropsychological Test Performance", edited by Peter Arnett. (Its on google ...


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