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Question: How do you rate the usefulness of the following strategies for understanding and memorising the text? - I underline important parts of the text.
Choices: 1 "Not useful at all" - 6 "Very useful"
Data: Average score
Period:
Area:
38 countries/ areas
Highlight:
1 Republic of Korea4.56
2 Portugal4.50
3 Japan4.46
4 Turkiye4.42
5 Spain4.40
6 Greece4.39
7 Mexico4.37
8 Italy4.35
8 United Kingdom4.35
10 Ireland4.25
11 Germany4.23
12 Costa Rica4.22
13 Chile4.16
14 Switzerland4.15
15 France4.10
16 Hungary4.07
17 Estonia4.05
18 United States4.01
19 Slovenia4.00
20 Poland3.99
21 Australia3.95
21 Austria3.95
23 Luxembourg3.92
24 New Zealand3.88
25 Finland3.79
25 Latvia3.79
27 Belgium3.78
27 Israel3.78
29 Canada3.74
29 Denmark3.74
31 Lithuania3.70
32 Sweden 3.68
33 Colombia3.63
34 Czech Republic3.52
35 Netherlands3.51
36 Iceland3.44
37 Slovakia3.41
38 Norway3.35

Note
The data of Azerbaijan are collected only in Baku. The data of China are collected only in Beijing, Shanghai, Jiangsu, and Zhejiang.

Source
OECD PISA 2018 Compendia

Correlations with major national performance indices
Life satisfaction (10 steps)
No. of data38
Regression equation
Y = -0.910917 X +10.319
Correlation coefficient (r)-0.531
Coefficient of determination (R2)0.282

GDP per capita (current US$)
No. of data38
Regression equation
Y = -24205.778058 X +141149.918
Correlation coefficient (r)-0.280
Coefficient of determination (R2)0.078

Life expectancy at birth - Both sexes (years)
No. of data38
Regression equation
Y = 0.826102 X +76.557
Correlation coefficient (r)0.074
Coefficient of determination (R2)0.005

Fertility rate, total (births per woman)
No. of data38
Regression equation
Y = -0.324138 X +2.880
Correlation coefficient (r)-0.342
Coefficient of determination (R2)0.117

Suicide, age-standardized (per 100 000 population)
No. of data38
Regression equation
Y = -2.488811 X +19.788
Correlation coefficient (r)-0.201
Coefficient of determination (R2)0.040