Add a new page. edit this panel. Top-down and bottom-up theories of perception. Psychologists often distinguish between top-down and bottom-up approaches to information-processing. In top-down approaches, knowledge or expectations are used to guide processing.
Full size beds are 54â³ (137 cm) wide and 75â³ (191 cm) long, making them smaller than a standard queen size bed that measures 60â³ x 80â³ (152 cm x 203 cm). The following picture is a handy reference for â and easy visual representation of â all the different bed sizes: twin, full, queen, king and California king size.
Full Mattress. Sometimes still called a double mattress, a full size mattress is 53 inches wide, which is just 15 inches wider than a twin size (single). That leaves each partner only 27 inches of personal space, or about the width of a crib.ueen mattress dimensions are 60 inches wide by approximately 80 inches long â 6 inches wider and 5 inches longer than a full size mattress. These added inches can make all the difference in comfort, especially for couples, and have made the queen size mattress today's most popular mattress size.