Symbiotic relationship mother/son/absent father [5] [9]

Attachment avoidant/ambivalent [7] [13] [34]

Social and parental high expectations [15] [18] [21] [33] [35]

Peer rejection, bullying and discrimination [8] [34] [35]

Contrast between older traditions and a highly technologized society [5]

Employment uncertainty and rapid shifting social values [15]

Widespread social online interaction/online gaming [10] [15]