Middle-Born~
Positives: The classic middle child is very relational; a people-pleaser who usually dislikes confrontation. They basically need to keep life smooth, and their motto might be 'peace at any price'. They are usually very calm, will roll with the punches as amiable, down-to-earth people and great listeners. They are skilled at seeing both sides of a problem and keen to make everybody happy, making them good mediators and negotiators.
Negatives: They tend to be less ambitious or driven than first-borns, but much more eager to be liked― or, at least, to be happy with other people. They can have a difficult time setting boundaries, so they can drift into 'co-dependence' by trying to please everyone. They are not good at making decisions which offend others and tend to blame themselves for the failures of others.

Last-Born~
Positives: Last-borns are the cheerleaders of the world. They have good social skills and love to entertain and talk to other people. They make friends readily, and quickly make others feel at home. They’re extrovert, energised by the presence of other people and probably not afraid of taking risks.
Negatives: Last-borns often tend to get bored fast. They are fearful of rejection and have a short attention span. When the fun stops, they've had enough and want to check out. To some extent they're self-centred. They can harbour unrealistic expectations of finding a relationship that’s always fun, and, of course, such relationships simply do not last.


First-born~
Positives: Natural leaders, first-borns are often high achievers- many politicians, spokespersons and managing directors are first-borns. They frequently have a sense of entitlement and possibly superiority. Some are compliant nurturers/caregivers, while others are aggressive movers and shakers. They are both in control, but use different methods. Generally, first-borns are picky, precise people that pay heed to details, tending to be punctual, competent and organised. They want to see things done correctly first time around and dislike surprises. Negatives: They are frequently moody, and they occasionally lack sensitivity. They can be intimidating, especially by pushing people too hard or refusing to take no for an answer. They are sometimes a bit 'know-it-all' and are often poor at delegating – mainly because they don't trust others as much as themselves. They also tend to be bossy perfectionists and overly conscientious.

Only Child~
Positives: Only children are the movers and shakers- task-orientated, highly organised, conscientious and reliable. They like concrete facts and details, and are comfortable with responsibility.
Negatives: The negative characteristics of only children can be difficult to put up with. Often unforgiving, they can be demanding and unwilling to admit it when they're wrong. They generally don't accept criticism too well. Other people mqay think of them as sensitive and indeed, their feelings are easily hurt.