Emotional signals of the players during different computer game stages (with different asteroid generation frequency) were compared. Subintervals of spaceshipasteroid collisions environment were investigated when emotional signals as well as spaceship manoeuvring speed and acceleration were taken into account.
Significant changes in frustration and engagement were registered between Stage II and Stage III of the computer game (Table 1). At Stage II frustration increased while boredom decreased. A statistical tendency observed that excitement also increased ant Stage III. At Stage III manoeuvring speed was faster, but no significant changes in manoeuvring acceleration were observed.
Table 1. Changes in excitement, frustration, engagement, manoeuvring speed and acceleration during the experiment. Wilcoxon Signed Ranks Test.
The test for the subintervals of collision interval in excitement signal showed that there are significant change between subinterval 1 and subinterval 3 (Table 2). Excitement signal is increasing more often than decreasing after spaceship collision with an asteroid (comparing precollision and postcollision subintervals).
Table 2. Changes in excitement in collision interval when evaluating their subintervals. Wilcoxon Signed Ranks Test.
The test for the subintervals of collision interval in frustration signal showed that there are significant change between subinterval 1 and subinterval 2 (Table 3). Frustration signal is decreasing more often than increasing if comparing the precollision and collision subintervals.
Table 3. Changes in frustration in collision interval when evaluating their subintervals. Wilcoxon Signed Ranks Test.
Frustration
N
Mean rank
Z
P
Negative Ranks
60
54.43
subinterval 3 – subinterval 1
Positive Ranks
54
60.92
0.03
0.97
Ties
1

Negative Ranks
77
60.48
subinterval 2 – subinterval 1
Positive Ranks
35
47.74
4.33
<0.00
Ties
3

Table 4. Changes in manoeuvring speed in collision intervals when evaluating their subintervals. Wilcoxon Signed Ranks Test.
Speed
N
Mean rank
Z
P
Negative Ranks
48
61.99
subinterval 2 – subinterval 1
Positive Ranks
65
53.32
0.702
0.483
Ties
2

Negative Ranks
39
59.74
subinterval 3 – subinterval 1
Positive Ranks
71
53.17
2.155
0.031
Ties
5
Analysis of speed and acceleration changes in subintervals before and after collision revealed, that significant increase in speed is observed after collision (subinterval 3) comparing with speed before collision (subinterval 1) (Table 4)
Changes in acceleration in three collision subintervals more frequently resembled Ushape form: acceleration decreased in subinterval 2 comparing with subinterval 1, and increased again in subinterval 3 comparing with subinterval 1 (Table 5).
Table 5. Changes in acceleration in collision intervals when evaluating their subintervals. Wilcoxon Signed Ranks Test.
The comparison of excitement, speed and acceleration subintervals showed negative correlations between some subintervals of the signals (Table 6). Postcollision subintervals of excitement signal correlate with all three speed subintervals.
Table 6. Relationship between excitement and speed and acceleration. Spearman rho.
**Correlation is significant at p<0.05, (2tailed)
***Correlation is significant at p<0.01, (2tailed)
The comparison of frustration, manoeuvring speed and acceleration subintervals showed positive correlations between precollision and collision subintervals of frustration and collision subinterval of speed as well as precollision subintervals of acceleration signals (Table 7).
Table 7. Relationship between frustration and manoeuvring speed and acceleration. Spearman rho.