Crystallized and Fluid Intelligence in Elderly Patients With Mild Dementia of the Alzheimer Type

1998 ◽  
Vol 10 (2) ◽  
pp. 147-154 ◽  
Author(s):  
Osamu Matsuda ◽  
Masahiko Saito

To examine early intellectual deficits in elderly patients with dementia of the Alzheimer type (DAT), 25 mildly impaired patients with DAT and 25 normal controls were compared using the Japanese version of the Wechsler Adult Intelligence Scale–Revised (WAIS-R). The two groups did not differ significantly in age, years of education, or sex ratio. Based on Horn's modified fluid and crystallized model, the WAIS-R subtests were classified into two categories (i.e., fluid intelligence and crystallized intelligence). The DAT group showed a significantly lower crystallized intelligence score, whereas the fluid intelligence scores did not differ significantly between the two groups. When the subtests were examined individually, the subtests for crystallized intelligence (i.e., information, comprehension, and similarities) were found to show the most significant deficits. These results suggest that elderly subjects with mild DAT have more impaired crystallized intelligence than those without dementia.

2015 ◽  
Vol 7 (6) ◽  
pp. 69
Author(s):  
Mohammad Davoudi ◽  
Narges Amel Sadeghi

<p>The aim of this study was to examine if there is any relationship between the two types of intelligences in Cattell'sGF- GC theory and learning foreign language grammar among Iranian learners. To this end, 85 university students took part in this study. First, the participants were asked to take the Raven's Advanced Progressive Matrices (APM), then the researcher asked them to take part in Wechsler Adult Intelligence Scale (WAIS) separately, and the interview for each participant was recorded. The researcher used the students' grammar scores which were obtained from their professors as the measure of their level of grammatical knowledge. The result of the study showed that there are significant correlations between the two types of intelligences (fluid and crystallized intelligences) and foreign language grammar. Moreover, the result from path analysis showed that between the two intelligences in the GF-GC theory, fluid intelligence is a better cognitive predicator of learning foreign language grammar. Bearing the finding of this study in mind, language teachers should provide an environment in which students can develop their cognitive abilities such as abstract reasoning and critical thinking.</p>


1976 ◽  
Vol 39 (3) ◽  
pp. 999-1006 ◽  
Author(s):  
Joan F. Goodman

This study investigates Verbal, Performance, and Full Scale IQ change in an institutionalized mentally retarded population. 402 individuals who had received two routine administrations of either the Wechsler Intelligence Scale for Children or the Wechsler Adult Intelligence Scale and who ranged in age from 11 to 44 were included as subjects. They were divided into six groups (two WISC and four WAIS) and changes in scores were studied using a semi-longitudinal methodology. Contrary to the dominant view suggested by previous research, Full Scale IQ did not decrease with age. There were, in fact, slight increments, larger and more consistent in Performance than Verbal IQ. This differential change is discussed in terms of the Horn-Cattell theory of “fluid” and “crystallized” intelligence.


2015 ◽  
Vol 26 (1) ◽  
pp. 5-16 ◽  
Author(s):  
Anja C. Lepach ◽  
Wiebke Reimers ◽  
Franz Pauls ◽  
Franz Petermann ◽  
Monika Daseking

Diese Studie untersucht die Zusammenhänge von Intelligenz- und Gedächtnisleistungen in der Wechsler Adult Intelligence Scale-IV und der Wechsler Memory Scale-IV unter Berücksichtigung des Geschlechts (N = 137 Gesunde, 63 w/74 m). Ein Vorteil der weiblichen Testpersonen im verbalen episodischen Gedächtnis sowie in einzelnen Aufgaben zur Verarbeitungsgeschwindigkeit konnte beobachtet werden. Die männlichen Testpersonen schnitten in den Untertests Allgemeines Wissen und Visuelle Puzzles besser ab. Wie gut Gedächtnisleistungen Intelligenzleistungen erklären beziehungsweise vorhersagen, ist aufgrund unserer Ergebnisse nicht nur abhängig von den Aufgaben, sondern auch vom Geschlecht.


2013 ◽  
Vol 24 (3) ◽  
pp. 149-160 ◽  
Author(s):  
Monika Daseking ◽  
Franz Petermann

Im vorliegenden Beitrag wird der Datensatz (N = 1664), aus dem auch die Normstichprobe für die deutschsprachige Version der Wechsler Adult Intelligence Scale – Fourth Edition (WAIS-IV) gezogen wurde, nach altersabhängigen Veränderungen kognitiver Fähigkeiten analysiert. Die niedrigsten Rohwertmittelwerte werden in der ältesten Altersgruppe erreicht, die Leistungsspitzen finden sich überwiegend im Altersbereich zwischen 20 und 29 Jahren. In den Untertests der Indizes Wahrnehmungsgebundenes Logisches Denken und Verarbeitungsgeschwindigkeit kommt es zu einer bedeutsamen Leistungsabnahme mit zunehmendem Alter: In der ältesten Altersgruppe werden nur noch zwischen 50 und 60 % der Rohwertmittelwerte der leistungsstärksten Altersgruppe erreicht. Gleichzeitig nimmt die Heterogenität in der Rohwertverteilung zu. Für die Indizes Sprachverständnis und Arbeitsgedächtnis fallen beide Effekte deutlich niedriger aus.


2018 ◽  
Author(s):  
Lijljana B. Lazarević ◽  
Goran Knežević ◽  
Marija Mitić ◽  
Dragana Đurić Jočić

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Begoña Sanz ◽  
Haritz Arrieta ◽  
Chloe Rezola-Pardo ◽  
Ainhoa Fernández-Atutxa ◽  
Jon Garin-Balerdi ◽  
...  

AbstractSerum alpha-klotho (s-klotho) protein has been linked with lifespan, and low concentrations of s-klotho have been associated with worse physical and cognitive outcomes. Although its significance in aging remains unclear, s-klotho has been proposed as a molecular biomarker of frailty and dependence. This study is a secondary analysis of data from a clinical trial performed in a population of 103 older individuals living in 10 nursing homes in Gipuzkoa (Spain). We aimed to elucidate associations between s-klotho (as measured by enzyme-linked immunosorbent assay) and body composition, physical fitness, and cognition, as well as frailty and dependence (determined using validated tests and scales). In addition, we investigated the association of s-klotho concentration with falls in the six months following the initial assessment. Low s-klotho levels were associated with a lower score in the psychological component of the Tilburg Frailty Indicator, a worse score in the Coding Wechsler Adult Intelligence Scale, and a greater dependence in activities of daily living. Moreover, participants with lower s-klotho concentrations suffered more falls during the 6 months after the assessment. Future translational research should aim to validate klotho’s putative role as a biomarker that could identify the risk of aging-related adverse events in clinical practice.


2003 ◽  
Vol 92 (3_suppl) ◽  
pp. 1151-1161 ◽  
Author(s):  
Aristide Saggino ◽  
Michela Balsamo

The present study examined associations between Wechsler Adult Intelligence Scale–Revised (WAIS–R) scores and the five-factor model of personality, as measured by the Revised NEO Personality Inventory. Both tests were administered to a nonclinical sample of 100 Italian subjects 75 years and older. Analysis showed that the NEO-PI–R Openness to Experience domain was a weak but the best predictor of the three WAIS–R intelligence scores (Total, Verbal, and Performance). Were such a relationship confirmed by further investigations, Openness could be interpreted as a factor which might mitigate intellectual impoverishment which accompanies the normal aging process.


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