Echinoderms take many forms of symmetry. Pentameral symmetry is the major form and the other forms are derived from it. However, the ancestors of echinoderms, which originated from Cambrian period, were believed to be bilaterians. Echinoderm larvae are bilateral during their early development. During embryonic development of starfish and sea urchins, the position and the developmental sequence ...

Many psychiatrists believe that there are special personality traits characteristic of the epileptic. Various writers have referred to these as mental peculiarities, emotional instability, impulsiveness, moral anergia, and incapacity for productive occupation involving initiative and consecutive activity (Spratling, 1904), eccentricity, supersensitiveness, emotional poverty, and rigidity (Clark...

For the aim at exploring differences on personality traits between excessive online game users and non-excessive users in Japan, an online survey was conducted using psychological scales measuring addictive tendencies for online gaming, depressive tendencies, aggression, and selfconcealment. The results revealed that that excessive online game users having addictive tendencies in Japan had lack...