Propositional density in seniors' responses

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00159816%3A_____%2F14%3A00068454" target="_blank" >RIV/00159816:_____/14:00068454 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

čeština

Název v původním jazyce

Propositional density in seniors' responses

Popis výsledku v původním jazyce

Objectives. It has been shown that propositional density (PD), which roughly corresponds to the number of ideas expressed in a text of given length, is related to cognitive performance in the older age. The present study investigated differences in propositional density in oral language production between healthy seniors and patients with mild cognitive impairment (MCI). MCI is generally accepted as a prodromal stage of Alzheimer&apos;s disease (AD). Sample and setting. The sample included 33 MCI persons and 32 healthy controls (mean age 73 years). The groups were equivalent as for the age and education. As expected, there was a significant difference between Mini-Mental State Examination (MMSE) scores between the groups, with MMSE being a simplified measure of their cognitive status. Hypotheses. Lower PD was expected in MCI persons, as the task required recent past recall which is considered one of the early deficiencies in early AD and MCI due to AD. Statistical analysis. Mean PD across groups was compared using the independent samples t-test. Results. Mean propositional density in MCI persons was 48,74% (SD 5,78), and in healthy controls 53,06% (SD 4,56). The difference was statistically significant (p&lt;0,001). Cohen&apos;s d 0,83 represents a large effect size for the group difference. Study limitations. The main limitation is the heterogeneity of the MCI group. Also, the detailed cognitive status of the healthy controls is unknown. Thus the group could include persons with some cognitive impairment which has not been detected yet.

Název v anglickém jazyce

Propositional density in seniors' responses

Popis výsledku anglicky

It has been shown that propositional density (PD), which roughly corresponds to the number of ideas expressed in a text of given length, is related to cognitive performance in the older age. The present study investigated differences in propositional density in oral language production between healthy seniors and patients with mild cognitive impairment (MCI). MCI is generally accepted as a prodromal stage of Alzheimer&apos;s disease (AD). The sample included 33 MCI persons and 32 healthy controls (mean age 73 years). The groups were equivalent as for the age and education. As expected, there was a significant difference between Mini-Mental State Examination (MMSE) scores between the groups, with MMSE being a simplified measure of their cognitive status. Lower PD was expected in MCI persons, as the task required recent past recall which is considered one of the early deficiencies in early AD and MCI due to AD. Mean PD across groups was compared using the independent samples t-test. Mean propositional density in MCI persons was 48,74% (SD 5,78), and in healthy controls 53,06% (SD 4,56). The difference was statistically significant (p&lt;0,001). Cohen&apos;s d 0,83 represents a large effect size for the group difference. The main limitation is the heterogeneity of the MCI group. Also, the detailed cognitive status of the healthy controls is unknown. Thus the group could include persons with some cognitive impairment which has not been detected yet.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

50101 - Psychology (including human - machine relations)

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Československá psychologie

ISSN

0009-062X

e-ISSN

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Svazek periodika

58

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

9

Strana od-do

317-325

Kód UT WoS článku

000341461800001

EID výsledku v databázi Scopus

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