I seek fewer but deeper interactions with people. I often weigh my own opinions against the opinions of others. I like to observe and study other people and their relationships. I appreciate solitude. I am often reserved and quiet. I dislike changing my own decisions. I plan ahead and tend to follow the plan. I am concrete, materialistic, realistic and practical. I am normally relatively unemotional or even cold. I am often having difficulties with initiating new contacts. I am attracted more to the theory than to its utilisation. I shy away from emotional disputes and quarrels. I subject everything to logical analysis. I appreciate ordered systems and structures. I often feel bound by my own promises and appointments. I am ok with dealing with strict rules and guidelines. I am fond of privacy and seclusion. I flee rather than talk about feelings.