3.1. Descriptive Statistics and Correlations among the Variables
The descriptive results and correlations among the variables are shown in
Table 2. The results show that the mean scores of the study abroad difficulties subscales (SSCS factors) ranged from 1.88 to 2.69, signifying moderately low perceived difficulties. The mean scores of the internet use subscales (IUM factors) ranged from 3.51 to 3.81, signifying moderately high perceived agreement. Composite reliability (CR) and convergent validity (or the average variance extracted, AVE) for the SSCS and IUM factors were all above the cutoff points (0.60 for CR and 0.40 for AVE) and are shown in
Table 2 [
76]. In addition, discriminant validity (DV) was assessed by comparing the square root of AVE with the correlations of the variables. The results show that the DVs were higher than the correlations, signifying adequate construct validity of the SSCS and the IUM [
76].
The correlation results show that the study abroad difficulties subscales were positively correlated with each other. Likewise, the internet use subscales were also positively correlated with each other. Interestingly, the study abroad difficulties subscales were mostly negatively correlated with the internet use subscales, implying that as internet use increases, study abroad difficulties decrease. The personality traits openness, conscientiousness, extraversion, and agreeableness were positively correlated with each other but negatively correlated with neuroticism. In addition, openness, conscientiousness, extraversion, and agreeableness were positively correlated with the internet use subscales and negatively correlated with the study abroad difficulties subscales. Neuroticism was negatively correlated with the internet use subscales and positively correlated with the study abroad difficulties subscales, implying that neuroticism is positively linked with study abroad difficulties.
Lastly, duration of stay was negatively correlated with leisure living difficulties, with r (1870) = −0.07, p < 0.01, and local viewpoints difficulties, with r (1870) = −0.05, p < 0.05. Likewise, duration of stay was negatively correlated with online benefits, with r (1870) = −0.10, p < 0.01, and online habits, with r (1870) = −0.05, p < 0.05. This is interesting because it denotes that students who spent less time studying in Taiwan had higher perceived online benefits and habits. In addition, age was positively correlated with daily living difficulties, with r (1870) = 0.11, p < 0.01, and suppressive difficulties, with r (1870) = 0.11, p < 0.01. Surprisingly, age was negatively correlated with all the internet use subscales: online benefits, with r (1870) = −0.07, p < 0.01; online habits, with r (1870) = −0.13, p < 0.01; and online facilitation, with r (1870) = −0.16, p < 0.01. This signifies that older students tend to be less adept at internet usage.
3.2. Effects of Gender and Status on Internet Use, Study Abroad Difficulties, and Personality
Independent samples t-tests were performed to test whether the students’ gender and status (short-term exchange or degree-seeking) had significant effects on their internet use (online benefits, habits, and facilitation), study abroad difficulties (academic, leisure living, local viewpoints, daily living, responsive, and suppressive), and personality traits (openness, conscientiousness, extraversion, agreeableness, and neuroticism).
The results show that statistically significant differences were found for: suppressive difficulties between females (M = 1.89, SD = 0.73) and males (M = 1.97, SD = 0.84), with
t (1844) = 2.23,
p < 0.05; online facilitation between females (M = 3.90, SD = 0.79) and males (M = 3.72, SD = 0.86), with
t (1860) = 4.83,
p < 0.001; conscientiousness between females (M = 3.16, SD = 0.62) and males (M = 3.24, SD = 0.62), with
t (1868) = 2.75,
p < 0.01; and neuroticism between females (M = 2.87, SD = 0.66) and males (M = 2.80, SD = 0.66), with
t (1868) = 2.52,
p < 0.05. Effect sizes were small, ranging from 0.10 to 0.22 [
77].
With regard to student status, the results show that statistically significant differences were found for: academic difficulties between short-term exchange (M = 2.19, SD = 0.78) and degree-seeking students (M = 2.29, SD = 0.90), with t (1767) = 2.23, p < 0.05; daily living difficulties between short-term exchange (M = 2.12, SD = 0.90) and degree-seeking students (M = 2.20, SD = 0.95), with t (1825) = 2.01, p < 0.05; online facilitation between short-term exchange (M = 3.76, SD = 0.81) and degree-seeking students (M = 3.87, SD = 0.85), with t (1868) = 2.85, p < 0.01; openness between short-term exchange (M = 3.31, SD = 0.58) and degree-seeking students (M = 3.37, SD = 0.58), with t (1868) = 2.14, p < 0.05; conscientiousness between short-term exchange (M = 3.15, SD = 0.61) and degree-seeking students (M = 3.25, SD = 0.63), with t (1868) = 3.59, p < 0.001; agreeableness between short-term exchange (M = 3.52, SD = 0.56) and degree-seeking students (M = 3.63, SD = 0.57), with t (1868) = 4.28, p < 0.001; and neuroticism between short-term exchange (M = 2.90, SD = 0.65) and degree-seeking students (M = 2.77, SD = 0.66), with t (1868) = 4.17, p < 0.001. Effect sizes were small, ranging from 0.09 to 0.20.
3.3. Variables Associated with Study Abroad Difficulties and Its Subscales
Hierarchical multiple regression analyses were conducted to reveal any significant associations for study abroad difficulties and its subscales: academic, leisure living, local viewpoints, daily living, responsive, and suppressive difficulties. Variables associated with the study abroad difficulties were entered using a three-step procedure. First, to control for possible effects, background demographic variables—age (in years), gender (0 = female, 1 = male), duration of stay (in months), and study abroad status (0 = short-term exchange, 1 = degree-seeking)—were entered into the equation. In the second step, after controlling for the background demographic variables, the various internet use subscales (online benefits, online habits, and online facilitation) were also entered into the equation. Lastly, in the third step, the big five personality traits (openness, conscientiousness, extraversion, agreeableness, and neuroticism) were entered into the equation.
Table 3 shows the results of the hierarchical multiple regression analyses. For study abroad difficulties as a whole, the control variables age (β = 0.098,
t (1865) = 4.159,
p < 0.001), duration of stay (β = −0.065,
t (1865) = −2.528,
p < 0.05), and status (β = 0.070,
t (1865) = 2.717,
p < 0.01) all showed significant associations and together explained 1.20% of the variance (
F [4, 1865] = 5.797,
p < 0.001). The internet use subscale online facilitation (β = −0.163,
t (1862) = −6.135,
p < 0.001) increases the explained variance to 5% (
F [3, 1862] = 25.096,
p < 0.001). Finally, agreeableness (β = −0.127,
t (1857) = −5.037,
p < 0.001) and neuroticism (β = 0.167,
t (1857) = 6.181,
p < 0.001) increased the explained variance to 12.30% (
F [5, 1857] = 30.894,
p < 0.001).
For the study abroad difficulties subscale academic difficulties, the only control variable that revealed a significant association was student status (β = 0.066, t (1865) = 2.562, p < 0.01), which explained 0.50% of the variance (F [4, 1865] = 2.546, p < 0.05). Next, the internet use subscale online facilitation (β = −0.170, t (1862) = −6.405, p < 0.001) increased the explained variance to 4.30% (F [3, 1862] = 24.670, p < 0.001). Then, conscientiousness (β = −0.115, t (1857) = −4.445, p < 0.001) and neuroticism (β = 0.111, t (1857) = 4.057, p < 0.001) increased the explained variance to 10.30% (F [5, 1857] = 24.683, p < 0.001).
For the study abroad difficulties subscale leisure living difficulties, the control variables age (β = 0.052, t (1865) = 2.177, p < 0.05) and duration of stay (β = −0.092, t (1865) = −3.575, p < 0.001) revealed significant associations and explained 0.90% of the variance (F [4, 1865] = 4.329, p < 0.01). Next, the internet use subscale online facilitation (β = −0.177, t (1862) = −6.680, p < 0.001) increased the explained variance to 4.80% (F [3, 1862] = 25.168, p < 0.001). Finally, agreeableness (β = −0.096, t (1857) = −3.702, p < 0.001) and neuroticism (β = 0.135, t (1857) = 4.891, p < 0.001) increased the explained variance to 8.40% (F [5, 1857] = 14.785, p < 0.001).
For the study abroad difficulties subscale local viewpoints, the control variables age (β = 0.054, t (1865) = 2.267, p < 0.05) and duration of stay (β = −0.073, t (1865) = −2.824, p < 0.01) revealed significant associations and explained 0.70% of the variance (F [4, 1865] = 3.490, p < 0.01). The internet use subscale online benefits (β = −0.108, t (1862) = −3.928, p < 0.001) increased the explained variance to 2.20% (F [3, 1862] = 9.703, p < 0.001), and conscientiousness (β = −0.073, t (1857) = −2.752, p < 0.01) and neuroticism (β = 0.117, t (1857) = 4.163, p < 0.001) increased the explained variance to 5.30% (F [5, 1857] = 12.264, p < 0.001).
For the study abroad difficulties subscale daily living difficulties, the control variables age (β = 0.123, t (1865) = 5.201, p < 0.001), duration of stay (β = −0.051, t (1865) = −1.979, p < 0.05), and status (β = 0.078, t (1865) = 3.041, p < 0.01) all revealed significant associations and explained 1.70% of the variance (F [4, 1865] = 8.104, p < 0.001). The internet use subscale online facilitation (β = −0.094, t (1862) = −3.485, p < 0.001) increased the explained variance to 2.70% (F [3, 1862] = 6.071, p < 0.001), and conscientiousness (β = 0.083, t (1857) = 3.193, p < 0.001), agreeableness (β = −0.202, t (1857) = −7.848, p < 0.001), and neuroticism (β = 0.123, t (1857) = 4.452, p < 0.001) further increased the explained variance to 8.80% (F [5, 1857] = 24.903, p < 0.001).
For the study abroad difficulties subscale responsive difficulties, none of the background demographics showed significant associations. The internet use subscales online habits (β = −0.056, t (1862) = −1.984, p < 0.05) and online facilitation (β = −0.098, t (1862) = −3.652, p < 0.001) explained 1.70% of the variance (F [3, 1862] = 9.475, p < 0.001). Then, extraversion (β = −0.084, t (1857) = −3.248, p < 0.001), agreeableness (β = −0.114, t (1857) = −4.391, p < 0.001), and neuroticism (β = 0.132, t (1857) = 4.740, p < 0.001) increased the explained variance to 7.40% (F [5, 1857] = 22.949, p < 0.001).
Lastly, for the study abroad difficulties subscale suppressive difficulties, the only control variable with a significant association was age (β = 0.111, t (1865) = 4.681, p < 0.001), which explained 1.40% of the variance (F [4, 1865] = 6.797, p < 0.001). The internet use subscales online habits (β = −0.055, t (1862) = −2.001, p < 0.05) and online facilitation (β = −0.136, t (1862) = −5.109, p < 0.001) increased the explained variance to 3.80% (F [3, 1862] = 15.231, p < 0.001), and agreeableness (β = −0.097, t (1857) = −3.697, p < 0.001) and neuroticism (β = 0.086, t (1857) = 3.056, p < 0.01) further increased the explained variance to 5.70% (F [5, 1857] = 7.402, p < 0.001).
3.4. Testing the Moderating Effect of Personality Traits
To understand the moderating effect of the different personality traits, several moderation analyses were performed using Interaction! Software [
75]. In addition to the moderation analyses, simple slopes difference tests were used to determine the three-way interactions within the moderated multiple regression models [
78]. More specifically, the simple slopes difference tests were used to test the effects of extreme values [
79]—high (+2 SD) personality traits and their lower (−2 SD) counterparts—on the relationship between internet use and study abroad difficulties. For better interpretability of the results, all variables and predictors were standardized and centered prior to computing [
80].
Table 4 shows the results of the moderation analysis and simple slopes models of study abroad difficulties, internet use, and openness. The total model accounted for 5.30% (
F [7, 1862] = 14.913,
p < 0.001) of the variance in study abroad difficulties. The results indicate that the control variables age (β = 0.074,
p < 0.01), duration of stay (β = −0.074,
p < 0.01), and status (β = 0.081,
p < 0.01) significantly predicted study abroad difficulties. In addition, internet use (β = −0.156,
p < 0.001), openness (β = −0.078,
p < 0.01), and the interaction between internet use and openness (β = −0.058,
p < 0.01) were statistically significant in the model. The effect size of the interaction was very small, with f
2 = 0.06 [
81]. Simple slopes difference analysis showed that the relationship between internet use and study abroad difficulties was significant among high (slope β = −0.272,
p < 0.001) and low (slope β = −0.040,
p > 0.05, non-significant or ns) openness students (β = −0.231,
p < 0.001) [
82].
Figure 2 shows the simple slope plot for the moderation effect of openness, which signifies that openness strengthens the negative relationship between internet use and study abroad difficulties.
Table 5 shows the results of the moderation analysis and simple slopes models of study abroad difficulties, internet use, and conscientiousness. The total model accounted for 6.51% (
F [7, 1862] = 18.511,
p < 0.001) of the variance in study abroad difficulties. The results indicate that the control variables age (β = 0.067,
p < 0.01), duration of stay (β = −0.075,
p < 0.01), and status (β = 0.088,
p < 0.001) significantly predicted study abroad difficulties. In addition, internet use (β = −0.143,
p < 0.001) and conscientiousness (β = −0.143,
p < 0.001) were statistically significant, although the interaction between internet use and conscientiousness (β = −0.040,
p > 0.05, ns) was not statistically significant in the model. Simple slopes difference analysis showed that the relationship between internet use and study abroad difficulties was significant among high (slope β = −0.223,
p < 0.001) and low (slope β = −0.062,
p > 0.05, ns) conscientiousness students (β = −0.161,
p < 0.001).
Figure 3 shows the simple slope plot for the moderation effect of conscientiousness, signifying that conscientiousness strengthens the negative relationship between internet use and study abroad difficulties.
Table 6 shows the results of the moderation analysis and simple slopes models of study abroad difficulties, internet use, and extraversion. The total model accounted for 7.15% (
F [7, 1862] = 20.471,
p < 0.001) of the variance in study abroad difficulties. The results indicate that the control variables age (β = 0.072,
p < 0.01), duration of stay (β = −0.073,
p < 0.01), and status (β = 0.075,
p < 0.01) significantly predicted study abroad difficulties. In addition, internet use (β = −0.137,
p < 0.001), extraversion (β = −0.151,
p < 0.001), and the interaction between internet use and extraversion (β = −0.073,
p < 0.001) were statistically significant in the model. The effect size of the interaction was very small, with f
2 = 0.08. Simple slopes difference analysis showed that the relationship between internet use and study abroad difficulties was significant among high (slope β = −0.283,
p < 0.001) and low (slope β = 0.010,
p > 0.05, ns) extraversion students (β = −0.293,
p < 0.001).
Figure 4 shows the simple slope plot for the moderation effect of extraversion, signifying that extraversion strengthens the negative relationship between internet use and study abroad difficulties.
Table 7 shows the results of the moderation analysis and simple slopes models of study abroad difficulties, internet use, and agreeableness. The total model accounted for 9.06% (
F [7, 1862] = 26.512,
p < 0.001) of the variance in study abroad difficulties. The results indicate that the control variables age (β = 0.068,
p < 0.01), duration of stay (β = −0.074,
p < 0.01), and status (β = 0.094,
p < 0.001) significantly predicted study abroad difficulties. In addition, internet use (β = −0.125,
p < 0.001), agreeableness (β = −0.216,
p < 0.001), and the interaction between internet use and agreeableness (β = −0.058,
p < 0.01) were statistically significant in the model. The effect size of the interaction was very small, with f
2 = 0.10. Simple slopes difference analysis showed that the relationship between internet use and study abroad difficulties was significant among high (slope β = −0.242,
p < 0.001) and low (slope β = −0.008,
p > 0.05, ns) agreeableness students (β = −0.234,
p < 0.001).
Figure 5 shows the simple slope plot for the moderation effect of agreeableness, signifying that agreeableness strengthens the negative relationship between internet use and study abroad difficulties.
Table 8 shows the results of the moderation analysis and simple slopes models of study abroad difficulties, internet use, and neuroticism. The total model accounted for 10.60% (
F [7, 1862] = 31.551,
p < 0.001) of the variance in study abroad difficulties. The results indicate that the control variables age (β = 0.072,
p < 0.01), duration of stay (β = −0.069,
p < 0.01), and status (β = 0.097,
p < 0.001) significantly predicted study abroad difficulties. In addition, internet use (β = −0.123,
p < 0.001), neuroticism (β = 0.242,
p < 0.001), and the interaction between internet use and neuroticism (β = 0.060,
p < 0.01) were statistically significant in the model. The effect size of the interaction was very small, with f
2 = 0.12. Simple slopes difference analysis showed that the relationship between internet use and study abroad difficulties was significant among high (slope β = −0.003,
p > 0.05, ns) and low (slope β = −0.242,
p < 0.001) neuroticism students (β = 0.239,
p < 0.001).
Figure 6 shows the simple slope plot for the moderation effect of neuroticism, signifying that neuroticism dampens the negative relationship between internet use and study abroad difficulties.