We often spend a great deal of time, effort and money getting to know someone; only to discover that they have needs or desires that are incompatible with our frame of reference.  However, you can effectively recognize compatible traits and invite those people into your life who have a greater possibility of forming a quality relationship with you.  By taking a few moments to notice the person's handwriting you will observe very small neuro-muscular movements that are shared by people with particular personality traits.  Following is a brief summary of some of these traits.

Note: If the person tends to print rather than write a cursive script, they tend to put up barriers so others cannot easily see who they really are, but you can still interpret the individual strokes.

• Irritability and Temper: shown by jagged and angular letters, slashed right i-dots, right of the stem t-bars, barbs leading into first letters of words usually on capital m's, I's with two tails pointing to the right.  This writer tends to finger-point and blame others.  It would be helpful for the writer to lighten up and not expect so much of himself and others.
• Temper Tantrums: shown by long and sharply pointed endings to letters.  This writer tends to display sarcasm and makes it difficult for others to relate to them on a deep level.
• Defensiveness and Over-Sensitivity to Criticism: shown by loops that don't belong in the t or d.  Looped d's mean sensitivity to criticism and defensiveness about personal habits.  Looped t's mean sensitivity about work performance.
• Manipulation: shown by threaded writing, large writing and arcade endings to letters.  Thready, wispy strokes and arcade endings indicate secret motives and that a person may be concealing something.
• Argumentativeness: shown by p's with very high extensions into the upper zone.
• Jealousy: shown by jagged writing, teeny lops introducing upper case letters.  These writers tend to feel unlovable.  If the personal pronoun I has a tiny loop, jealousy can be a chronic and  crucial part of the writer's life.
• Aggressiveness and Hostility: shown by angular lower loops, jagged writing, stabs in the middle or lower zones of letters and stabs at the baseline.  These writers tend to be abrupt and see the world as a hostile place.
• Sadism: shown by blunt, clublike endings in the middle zone letters indicating a sadistic tendency.  Blunt endings below the line tend to indicate brutality.

Source: Instant People Reading Through Handwriting by Anne Conway.
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