Outline of the Fourth Longitudinal Survey of Newborns in the 21st Century
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(5) TV and Computer Games
The largest proportion in hours spent watching TV was "1 to less than 2 hours."
There was not much change in the trend of hours spent watching TV, with the largest proportion of children (39.4%) watched TV for "1 to less than 2 hours" (Figure 8).
Figure 8 Changes in the hours spent watching TV
Note: The figures are based on the total responses to the 3rd and 4th surveys (total replies: 40,616).
The rate of respondents reporting their children have "not acquired" the TV-related discipline was higher with children who watch TV for longer hours.
Among the respondents who "gave or giving discipline" of "having the children keep pre-defined time for watching TV or playing computer games," the rate of children who have "acquired" the discipline depended on the hours they watched TV. The rate of children who have acquired the TV-related discipline was the highest for the group who watched TV for "1 to less than 2 hours" (46.3%), exceeding 50% combined with "less than 1 hour." On the other hand, only 4.1% of children who watched TV for 4 hours or more have "acquired" the TV-related discipline, while as many as 9.6% of them have "not acquired" that discipline (Figure 9).
Figure 9 Correlation between the acquisition status of
TV-related discipline and the hours spent watching TV
[
画像:figure]
Notes: 1) The figures are based on the responses to the 4th survey, replying "gave or giving discipline" of "having children keep pre-defined time for watching TV or playing computer games" (total replies: 20,617).
2) The "other" includes the number of samples with "never watch TV," "not sure," and "unknown" concerning the hours spent watching TV.
85.0% of the surveyed children do not play computer games.
85.0% of the surveyed children do not play computer games, including TV games and mobile games. The proportion of children who do not play computer games was higher with girls and with children having no elder siblings ("only child" or "younger sibling(s) only"). As for the hours of playing computer games, the largest percentage replied "less than 1 hour" (Table 13).
Table 13 Hours playing computer games, in relation to the sex and sibling composition of children
(Unit: %)
Total
Do not
play
computer
games
Play
computer
games
Hours of playing
Less than 1
hour
1 to less
than 2
hours
2 to less
than 3
hours
3 hours or
more
Unknown
Total
100.0
85.0
14.5
10.0
3.5
0.5
0.3
0.2
Sex
Boy
100.0
82.1
17.5
11.4
4.8
0.7
0.4
0.2
Girl
100.0
88.2
11.3
8.5
2.2
0.3
0.1
0.2
Sibling composition
Only child
100.0
88.2
11.1
7.5
2.9
0.4
0.2
0.2
Younger sibling(s) only
100.0
90.6
9.0
6.1
2.1
0.4
0.3
0.1
Elder sibling(s) only
100.0
80.2
19.4
13.7
4.6
0.6
0.3
0.2
Both elder and younger siblings
100.0
84.6
15.0
9.4
4.4
0.6
0.3
0.3
Notes: 1) The figures are based on the responses to the 4th survey (total replies: 41,557).
2) The total includes the number of samples with "unknown" for each item.
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