The role of gender, task success probability estimation and scores as predictors of the domain-masculine intelligence type (DMIQ)

This paper reports a study aimed at understanding correlates of self-estimated intelligence. Participants twice estimated their mathematical and spatial intelligence (called domain-masculine intelligence type: DMIQ) on a normal distribution, before and after taking ability tests. They completed a number of short numerical and logical ability tests after which they estimated their performance at a similar, more difficult task. Males gave higher estimates than females and did better on the tests. As predicted their estimates of their DMIQ reduced on the second occasion after testing. Gender, task score and estimated performance were all significant predictors of both DMIQ scores. Task confidence was the best predictor of both before and after test estimates, over and above gender and test score, explaining 17% and 23% of variance, respectively. This is explained in terms of Dweck's (2007) mindset theory and Eccles and Wigfield's (2002) motivation theory. Results are discussed in terms of the literature on self-estimated intelligence and stereotype threat

Hubris and Humility Effect and the Domain-Masculine Intelligence Type in Two Countries: Colombia and the UK

Spanish-speaking Colombian (n = 50) and English-speaking British (N = 52) adults completed a self-assessed intelligence measure that yielded a score on domain-masculine intelligence (DMIQ), a composite of mathematical/logical and spatial intelligences. They also completed a Sex Role inventory in order to establish their masculinity and femininity. Males in both countries gave significantly higher self-estimates (Colombia: Males 110.36, Females 100.75, d = .94; England: Males 114.37, Females 105.75, d = .86; both p < .01) than females but sex role was note related to DMIQ. However there was a positive relationship between masculinity and DMIQ (r = .45, r = .39, p < .01), but only for males. Cultural issues in self-assessed intelligence and limitations, particularly sample size of this exploratory study are considered

Hubris-Humility Effect and Domain-Masculine Intelligence Type in Czech Republic

Czech adults completed a self-assessed intelligence measure that yielded a score on domainmasculine intelligence (DMIQ), a composite of mathematical/logical and spatial intelligences. They also completed a sex role inventory. The sex of the participants but not their sex role was related to DMIQ. There was a positive relationship between masculinity and DMIQ, but only for males. Cultural issues in self assessed intelligence and limitations of this study are considered

Gender, g, gender identity concepts, and self-constructs as predictors of the self-estimated IQ.

In all 102 participants completed 2 intelligence tests, a self-estimated domain-masculine (DMIQ) intelligence rating (which is a composite of self-rated mathematical-logical and spatial intelligence), a measure of self-esteem, and of self-control. The aim was to confirm and extend previous findings about the role of general intelligence and gender identity in self-assessed intelligence. It aimed to examine further correlates of the Hubris-Humility Effect that shows men believe they are more intelligent than women. The DMIQ scores were correlated significantly with gender, psychometrically assessed IQ, and masculinity but not self-esteem or self-control. Stepwise regressions indicated that gender and gender role were the strongest predictors of DMIQ accounting for a third of the variance

NMR and conductivity studies of the mixed glass former effect in lithium borophosphate glasses

Alkali ion charge transport has been studied in a series of mixed glass former lithium borophosphate glasses of composition 0.33Li2O + 0.67[xB2O3 + (1 – x)P2O5]. The entire concentration range, 0.0 ≤ x ≤ 1.0, from pure glassy Li2P4O11 to pure glassy Li2B4O7 has been examined while keeping the molar fraction of Li2O constant. Electrical conductivity measurements and nuclear magnetic resonance techniques such as spin relaxometry, line shape analysis, and stimulated-echo spectroscopy were used to examine the temperature and frequency dependence of the Li+ ion motion over wide ranges of time scale and temperature. By accurately determining motional time scales and activation energies over the entire composition range the ion dynamics and the charge transport are found to be fastest if the borate and the phosphate fractions are similar. The nonlinear variation of the charge conduction, the most notable feature of the mixed glass former effect, is discussed in terms of the composition dependence of network former units which determine the local glass structure

From ultraslow to extremely fast dynamics in sodium nitrate

Increasing dynamics in solids featuring nuclei subjected to second-order quadrupolar interactions lead to central-transition spectra that undergo two consecutive line-shaped transitions. Conventional motional narrowing occurs when the molecular exchange rate is on the order of the strength of the dominant interaction. In a second step, the resulting intermediately narrowed spectra change further when the motion becomes faster than the Larmor precession rate, leading to terminally narrowed spectra that can display a residual quadrupolar shift. We derive analytic expressions for this shift and analyze the quadrupolar central-transition spectra in terms of CN symmetrical cone models. Increasing the number of sites to N ≥ 3, the terminally narrowed spectra remain unaltered, while the intermediately narrowed spectra remain unaltered only for N ≥ 5. This finding relates to the different (cubic vs. icosahedral) symmetries that are required to average out the spatial second- and fourth-rank terms in the second-order quadrupolar interaction. Following recent work (Hung et al., Solid State Nucl Magn Reson 84:14–19, 2017), 17O NMR is applied to examine the three-site rotation of the nitrate group in NaNO3. Line shapes are measured and analyzed, and in addition to prior work, satellite-transition and stimulated-echo experiments are carried out. The final-state amplitudes extracted from the latter are reproduced using model calculations. It is shown how two-dimensional exchange spectra relating to N-site cone motions can be decomposed in terms of effective two-site-jump spectra. This latter approach is successfully tested for NaNO3