TY - GEN AU - Smith,J AU - Kaufman,H AU - Baldasare,J TI - Direct estimation considered within a comparative judgment framework SN - 0002-9556 PY - 1984///1130 KW - Cognition KW - Differential Threshold KW - Humans KW - Judgment KW - Psychophysics KW - Size Perception N1 - Publication Type: Journal Article ER -