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.
Both full beds and twin beds are 75 inches (191 cm) long. They differ when it comes to width, however. At 54 inches (137 cm) wide, a full size bed is nearly as wide as a queen size bed. Twin beds are much narrower, measuring a mere 39 inches (99 cm) across. Non-Standard Dimensions. Both full and twin beds have extra-long, or XL, versions, which add an extra five inches (13 cm) to the bed's length. At 80 inches (203 cm), this makes these versions of full and twin size beds as long as king and queen size beds.