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Based on evidence for brain affective systems, parceled into six distinct groups (Panksepp, 1998a), it was hypothesized that a great deal of personality variability would be related to strengths and weaknesses found in these six systems. If supported, this hypothesis would provide further evidence for the physiological bases of personality. Personality scales, modeled after the Spielberger State-Trait Personality Inventory (STPI), were constructed to estimate self-reported feedback concerning the putative influences of these six neurally based networks, which are labeled PLAY, SEEK, CARE, FEAR, ANGER, and SADNESS systems, along with a Spirituality scale and various filler questions. Subjects completed these Affective Neuroscience Personality Scales (ANPS) as well as a Five-Factor Model (FFM) scale. Data revealed various strong relationship between the APNS and the FFM scales. Implications for psychometric theory, the relationships between affect and personality, as well as the physiological bases of personality are discussed.