2.1. Digital Literacy and Media Literacy
The use of digital devices is becoming a necessity in everyday life for everyone in the modern knowledge–information society. In addition to access to digital devices, the ability to utilize various digital services and digital tools is becoming a very essential capability. This knowledge of digital as a whole is called digital literacy, and the definitions of academic digital literacy vary considerably. According to Wikipedia, digital literacy refers to an individual’s ability to find, evaluate, and combine clear information while encountering various media on a digital platform [
15].
Meanwhile, the media of the 21st century permeates deep into our lives. For people of all ages, including adolescents, the media plays the role of friends and teachers at the same time, becoming a powerful means of accepting and sharing diverse information. We all need to know how to communicate with diverse and new media regardless of our intentions to lead our daily lives, how to critically accept information from the media, and how to share our opinions correctly and legally through the media. Along with the aforementioned digital literacy, media literacy is becoming an essential capability for everyone in the modern knowledge–information society. According to Wikipedia, media literacy encompasses customs that allow people to access, criticize, create, or manipulate the media [
16].
Digital literacy and media literacy are inseparable. In other words, digital literacy is bound to include media literacy in that it requires the use of digital media devices and also digital media information. Meanwhile, media literacy is forced to include digital media in that traditional media has shifted from offline media such as newspapers and records to digital information such as web documents. As such, digital literacy and media literacy have similarities, although there are differences. Renee Hobbs presents the similarities and differences between digital literacy and media literacy, as shown in
Table 1 below [
17].
As shown in
Table 1, the overlap between digital literacy and media literacy can be said to be an area where both technical and cultural (or ethical) elements are needed. Digital literacy and media literacy are both essential capabilities in modern society, and each country is strengthening and expanding its education and policies for digital literacy and media literacy [
18,
19,
20].
As previously described, digital literacy and media literacy are essential information capabilities for everyone who lives in a modern knowledge–information society. Therefore, both digital literacy and media literacy are very closely related to the issue of the digital divide. First, cultivating digital literacy ultimately becomes an important means of reducing the digital divide [
21]. Similarly, strengthening media literacy education becomes an important way to solve the digital divide problem [
22].
2.2. Concept of the Digital Divide
In the literature, the digital divide is defined variously, as follows.
According to Wikipedia, the digital divide refers to the gap between those who are able to benefit from the digital age and those who are not [
23]. That is, people without access to the Internet and other information and communication technologies will be disadvantaged since they are unable or at least less able to obtain and enjoy digital information and communication between people.
According to Naver, the digital divide refers to the widening gap as access to knowledge and information is unequal between classes, regions, genders, and countries. The digital divide is emerging as a new social and international issue as the gap in access to and use of information, the most important production factor in the information age, is feared to be deepening the income gap [
24].
According to Digital Divide Council, the digital divide is “the gap that exists between individuals who have access to modern information and communication technology and those who lack access.” [
25]. Additionally, causes of the digital divide include education, income levels, geographical restrictions, motivation and general interest, and digital literacy.
2.3. The Measurement of the Digital Divide
Based on the belief that reducing the digital divide can lead to national development through the alleviation of inequality, the Korean government has investigated and announced the digital divide every year since 2000. The Korea Information Society Agency (
http://www.nia.or.kr (accessed on 31 July 2021)) is in charge of the survey of the digital divide between the general public and information disadvantaged classes. The agency has published annually the status of the digital divide based on the digital informatization level. The four major information disadvantaged classes include the disabled, older people, farmers and fishermen, and the low-income class.
The digital informatization level, which is a measurement unit of digital divide status in the survey, is a quantitative and comprehensive metric. The digital divide is calculated by the digital informatization level among the general public and the information disadvantaged classes. Specifically, if the digital informatization level of the general public is assumed to be 100, the digital informatization level of information disadvantaged classes to the general public was measured to calculate the difference of the digital informatization level between the general public and the information disadvantaged classes.
The digital informatization level consists of the following specific indices. The number in parentheses represents the relative ratio to 1.
Digital Informatization Level (comprehensive) = Information Access Level (0.2) + Information Capability Level (0.4) + Information Utilization Level (0.4).
- ①
Information Access Level = whether or not they have wired and wireless information devices (0.5) + whether Internet access is always available (0.5).
- ②
Information Capability Level = PC usability (0.5) + mobile device usability (0.5).
- ③
Information Utilization Level = whether or not they use wired and mobile internet (0.4) + diversity of Internet service use (0.4) + degree of advanced Internet use (0.2).
Table 2 shows the digital informatization level of older people since 2017 [
7,
8,
9,
10]. Note that the digital informatization level is the point of older people, assuming that the digital informatization level of the general public is 100.
2.4. Previous Works
There have been some research works on the digital divide of older people in Korea.
Park and Kim presented an empirical and technical study of the longitudinal trend of the digital divide change within the older generation [
26]. To this end, the study empirically analyzed changes in digital media accessibility, digital media capabilities, and digital media utilization by dividing the response panel of senior citizens aged 55 and older into four more age groups (55–64, 65–74, 75–84, and 85 and older). In particular, in addition to population social factors, they identify the influence of smartphone retention factors, and analyze the relationship between digital accessibility, capability, and utilization. Studies have confirmed that gaps exist within older age groups. They have identified digital media accessibility, which shows a continuous growth trend in all age groups, and found that education and income levels are the most influential factors in smartphone accessibility in all four age groups. Therefore, it suggests that policy consideration and system preparation are necessary. In contrast, changes in digital capabilities and utilization trends have seen relatively significant gaps between 55–74 and 75 years of age and older, and the interaction between smartphone possession and digital capabilities has a positive impact on digital utilization among older adults.
Yim et al. presented a study that intends to focus on the baby boomers and the elderly generation, considering the factors affecting the digital divide gap among the elderly [
27]. In particular, they set gender, academic background, household type, usage motive, usage attitude, anxiety about the information intelligence society, life satisfaction, and social support as major factors affecting the digital divide gap among the elderly. To this end, this study analyzed 2300 people aged 55 and over based on data from the 2017 digital divide survey conducted by the Korea Information Society Agency in 2018. As a result of the analysis, baby boomers’ digital engagement was shown to be significantly affected by gender, academic background, usage motive, usage attitude, intelligent information society, and life satisfaction, and the elderly generation was shown to be affected by household type, intelligent society perception, and life satisfaction.
Choi and Choi published a paper aimed at verifying through empirical data whether informatization is a democratic tool for expanding the political participation of the elderly or a problem that strengthens inequality in power resources [
28]. In addition, based on the discussion that political behavior is different from generation to generation by internalizing the social and historical context in which individuals grew up, they analyzed whether the relationship between informatization and political participation varies from generation to generation. Data from 225 members of the elderly and 533 of the young and old generations were analyzed from the raw materials for the 2017 Age Integration Survey. According to the analysis, the political participation of the elderly generation is significantly influenced by the use of information, and the political participation of the younger generation is affected statically by information access and information utilization. In addition, the elderly generation confirmed the regulatory effect of the generation, where the increase in information access was not linked to the expansion of political participation, while the youth generation confirmed the increase in information access meaningfully expanded political participation.
Ju et al. presented a study, the purpose of which is to find variables predicting the digital divide of the elderly, analyze gender differences, and use them as basic data for preparing policy directions related to the digital divide of the elderly [
29]. To this end, 340 senior citizens (169 males and 171 females) from all over the country who participated in the 2017 Age Integration Survey surveyed nationwide were analyzed. The results of this study are as follows. First, gender differences in the digital divide (information access, information capability, Internet utilization, and mobile utilization) were found to be significantly higher in men, except for the number of devices in information access. Secondly, the variables predicting access (number of devices), the primary digital divide, are educational background, cohabitation with family members, age, and generational integration. Furthermore, educational background, age, and generational integration have been significantly identified as variables for predicting access (usage time). Third, in information capability, which is the secondary digital divide, variables such as the number of devices, gender, educational background, usage time, and living satisfaction were shown to be significant. Fourth, variables such as the number of devices, gender, age, social status, and usage time were significant for the Internet utilization, the secondary digital divide. Fifth, the number of devices, usage time, gender, age, generational integration, economic status, and cohabitation with family members are found to have significant impact ton mobile utilization, the second digital divide.
Hwang analyzed the impact of the digital divide on socioeconomic participation of the elderly by dividing them into baby boomers and pre baby boomers, and based on this, presented policy implications to alleviate the digital divide among the elderly [
30]. Based on this, the author presented individual IT education information and unified information services, development and dissemination of customized technologies through research on demand for IT-related policies, analysis of status.
The research works on the digital divide of older people in other countries besides Korea are as follows.
Paul and Stegbauer introduced the status of the digital divide among generations in Germany [
31]. In Germany, the proportion of Internet users aged 60 and older is lower than in other age groups. Additionally, older men use the Internet more than older women. In Germany, the proportion of elderly users is gradually increasing, but it falls short of the proportion of young users. They predict that the digital divide between the young and older generations will not be resolved in the near future. In addition, they estimated that education is a major factor in the digital divide of older people.
The medical school of National University of Singapore has released a status report of the digital divide among older Singaporeans. In this report, poor health is the main cause of the digital divide among older people in Singapore. In this report, it was argued that health problems interfere with older people’s Internet use, online communication and social activities between family and friends [
32].
Sunkel and Ullmann reported digital divide status for older adults in Latin America including countries such as Chile, Ecuador, El Salvador, Honduras, Mexico, and Peru [
33]. Just as the problem of aging has become a global problem many Latin American countries are gradually facing the aging problem. Accordingly, the digital divide in the elderly population is getting worse. Their report shows that there is a significant digital divide not only between countries in Latin America but also within countries. Internet usage has increased in all countries, but their level of use is still very low compared to groups aged 15–29 and 30–59. Additionally, many older people in Latin American countries live in homes with Internet access, but many of them do not use the Internet. This suggests that motivation and skills, namely the desire and ability to utilize information tools, are also necessary. In older adults, a lack of awareness of how these tools can address everyday needs can pose an important barrier to ICT use.