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Related Experiment Video

Updated: Jun 4, 2025

Assessment of Age-related Changes in Cognitive Functions Using EmoCogMeter, a Novel Tablet-computer Based Approach

Assessment of Age-related Changes in Cognitive Functions Using EmoCogMeter, a Novel Tablet-computer Based Approach

Published on: February 14, 2014

Development of the subjective cognitive function decline scale for middle-aged Koreans.

YongJoon So¹, Jinsun Hahm², Sei-Young Lee³

¹Department of Psychology, Chung-Ang University, Seoul, Republic of Korea.

Aging & Mental Health

|December 20, 2024

Summary

A new scale, the Subjective Cognitive Function Decline Scale for Middle-aged South Koreans (SCFD-K), reliably detects cognitive decline in middle-aged adults. This tool aids early identification of mild cognitive impairment in South Korea.

Keywords:

Cognition dementia middle-aged questionnaire subjective cognitive decline

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Last Updated: Jun 4, 2025

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Published on: January 24, 2020

Area of Science:

Gerontology
Neuroscience
Psychometrics

Background:

Existing cognitive decline assessments often overlook middle-aged populations and cultural specificities.
There is a critical need for culturally relevant tools for early detection of potential mild cognitive impairment.

Purpose of the Study:

To develop and validate the Subjective Cognitive Function Decline Scale for Middle-aged South Koreans (SCFD-K).
To provide a reliable measure for assessing subjective cognitive function decline in a specific demographic and cultural context.

Main Methods:

Focus group interviews and expert Delphi method were used to develop the initial scale items.
An online survey of 2,000 participants was conducted to examine the scale's reliability and validity.
Exploratory and confirmatory factor analyses were performed to validate the scale's structure.

Main Results:

The SCFD-K consists of 20 items across four factors: language, visuospatial function, personality/emotion, and memory.
Exploratory factor analysis showed a cumulative variance ratio of 57.76%.
Confirmatory factor analysis confirmed a robust four-factor structure with good model fit indices and acceptable internal consistency (Cronbach's α = 0.735-0.907).

Conclusions:

The SCFD-K is a reliable and valid instrument for assessing cognitive decline in middle-aged South Koreans.
The scale has significant cultural implications for South Korea.
Findings support proactive interventions and inform future healthcare strategies for cognitive health.