Concurrent validity and predictive validity are the two types of criterion-related validity. In order for a test to be valid, it needs to have construct validity, content validity, and criterion-related validity.
â¢ GLASSY (adjective) The adjective GLASSY has 3 senses: 1. resembling glass in smoothness and shininess and slickness. 2. (used of eyes) lacking liveliness. 3. (of ceramics) having the surface made shiny and nonporous by fusing a vitreous solution to it. Familiarity information: GLASSY used as an adjective is uncommon.
Glass is an organic substance consisting of a mixture of silicates, barates or phosphates that cools to a rigid condition without crystallization. (It can be made of quartz-sand, lime, soda, potash and lead oxide.) Crystal falls into the 3 main categories.