A longitudinal study on the stability of self-estimated intelligence and its relationship to personality traits

Prevalence of Dunning-Kruger effect in first semester medical students: a correlational study of self-assessment and actual academic performance

INTRODUCTION

The ability to self-assess is a crucial skill in identifying one's own strengths and weaknesses and in coordinating self-directed learning. The Dunning-Kruger effect occurs when limited knowledge causes individuals to overestimate their competence and underestimate others', leading to poor self-assessment and unrecognized incompetence. To serve as a foundation for developing strategies to improve self-assessment, the self-assessment abilities of first-semester students were assessed.

METHODS

In the final weeks of the summer 2021, winter 2021/22, and summer 2022 semesters, the academic performance (oral anatomy exam) of first semester students was assessed (0-15 points). Before the exam results were announced, students were asked to self-assess their performance.

RESULTS

Exam scores (M = 10.64, SD = 2.95) and self-assessed scores (M = 10.38, SD = 2.54) were comparable. The absolute difference between them, as a measure of self-assessment ability ranged from - 9 to + 9 points (M = -0.26, SD = 2.59). Among participants (N = 426), 18.5% assessed themselves accurately, 35.5% overestimated, and 46.0% underestimated their performance. The correlation between actual score and self-assessment was ρ = -0.590 (p < 0.001), reflecting the Dunning-Kruger effect. When separated by gender, correlation for females was ρ = -0.591 (p < 0.001), and for males ρ = -0.580 (p < 0.001).

CONCLUSIONS

Realistic self-assessment is a challenge for first-semester students. The data indicate that females tend to overestimate their performance while males underestimate theirs. A pronounced Dunning-Kruger effect is evident in both genders, with significant negative correlations between self-assessment and actual performance. There are several reasons for the occurrence of the Dunning-Kruger effect. Considering that the COVID-19 pandemic influenced learning environments, collaborative learning was significantly restricted. The lack of opportunities for comparison could potentially lead to unrealistic self-assessment.

Cognitive and personality differences between adolescents with and without attention deficit/hyperactivity disorder

BACKGROUND

The relationships between cognitive and personality profile in teenagers with and without ADHD were assessed.

METHOD

Two groups of teenagers, one with ADHD (N = 135; mean age = 13.93) and another group without ADHD (N = 199, mean age = 14.29) were evaluated using the K-BIT and 16PF-APQ tests.

RESULTS

In cognitive variables, the results revealed that the ADHD group returned higher scores in the Matrices subtest and the IQ test. In personality variables, the group with ADHD exhibited higher scores in Tough-Mindedness and lower scores in Self-Control than the group without the disorder. The canonical correlation analysis applied to each group revealed a differing pattern of interrelationships between the cognitive-personality variables in the two groups. In adolescents with ADHD, we observed that higher scores in cognitive variables were associated with a more extroverted personality and less self-control, while in adolescents without ADHD, higher scores in cognitive variables were associated with less tough-mindedness and lower levels of self-control.

CONCLUSIONS

The cognitive and personality variables of adolescents with and without ADHD differ. These results will be useful for establishing a cognitive and personality profile for this section of the population. The educational implications of the study are under discussion.

Why do evening people consider themselves more intelligent than morning individuals? The role of big five, narcissism, and objective cognitive ability

Morningness-eveningness, or chronotype, reflects the timing of sleep-wake patterns across a 24-hour day. Extant research has revealed that chronotype correlates with numerous psychological constructs including cognitive ability. In the current research, we examined how people with different chronotypes perceive their intelligence. We expected eveningness to be positively associated with subjectively assessed intelligence (SAI) because evening chronotypes demonstrate slightly higher intelligence than morning individuals. Furthermore, we considered personality traits (Big Five and narcissism) and objective intelligence (measured with standardized tests of fluid and verbal IQ) as potential variables that could account for this relationship. Across two studies (N = 504 and 232), we found that eveningness was associated with higher SAI. This relationship remained significant even after controlling for objective intelligence. In Study 1, we also found that when conscientiousness and neuroticism were analyzed together with chronotype, the magnitude of positive association between eveningness and SAI increased. Furthermore, Study 2 revealed that evening individuals exhibited higher narcissism, which fully accounted for their intelligence self-views. In the discussion, we speculate that daily struggles of evening chronotypes to function in morning-oriented society give them a basis to think positively about their intelligence to the extent of positive bias.