Final answer:
Martin would be classified as unstable-extraverted according to the Eysencks' personality dimensions due to his sociable, outgoing, impulsive, and restless behavior.
Step-by-step explanation:
Martin is described as optimistic, impulsive, excitable, and restless. According to the Eysencks' basic personality dimensions which include extroversion/introversion and neuroticism/stability, Martin would be classified as unstable-extraverted. This is because people high in extroversion are sociable and outgoing (optimistic and excitable), while those high in neuroticism (represented here as 'unstable') tend to be impulsive and restless. Adding the concept of psychoticism versus superego control, where psychoticism includes traits such as impulsivity, it further supports the classification of Martin as unstable-extraverted. The Eysencks' model does not use terms like 'external-dependent', 'manic-depressive', 'passive-aggressive', or 'internal-mesomorphic'.