1970s Topps on the back was in a different typeface. The Burger King set featured 22 cards plus a checklist card. Several cards reflected players changing teams, most notably Pete Rose (Phillies) and Tommy John (Yankees). During the 1970s Topps issued cards featuring the two professional basketball leagues active at the time, the American Basketball Association (ABA) and the National Basketball Association (NBA) until they merged in 1976. Base set 264 cards (NBA/ABA) Size: 2.5 × 3.5 inches Base set 264 cards (NBA/ABA) Size: 2.5 × 3.5 inches Base set 144 cards (NBA) Size: 3⅛ × 5¼ inches. Base set 132 cards
Size–weight illusion one, causing it to be perceived as lighter. This hypothesis was disproved by an experiment in which two objects of the same mass, same cross section, but different height were placed on observers' supported hands, and produced a passive size–weight illusion. Recent studies have also shown that the lifting force quickly adapts to the true mass of the objects, but the size–weight illusion remains. The illusion therefore cannot be explained by the manner of lifting, and must be due to some perceptual rescaling based on prior expectations. The rescaling has been described as sub-optimal (anti-Bayesian), in that the central nervous