Cross-sectional studies are subject to many methodological concerns and limitations. They cannot answer questions about the stability of a characteristic or process over time (Miller, 1998), and information is lost because of the use of averages to create group means (Wohlwill, 1973). A researcher planning to conduct a cross-sectional study needs to ensure at the outset that the measurement instruments (e.g., personality tests, intellec-tual assessments, etc.) he/she plans to use measure similar things at each age and are valid for each age under investigation (Miller, 1998). Another criticism of cross-sectional
Check out the best aquariums in the US to see what lives beneath the surfaces of the worldâs lakes, streams and seas. 1. Georgia Aquarium, Atlanta, GA. The Georgia Aquarium is the largest aquarium in the world with 550,000 square feet of exhibits, including over 100,000 animals. The Georgia Aquarium is home to the only whale sharks outside of Asia. One of the newest exhibits is the $110 million dolphin exhibit that features the theatrical âDolphin Talesâ show.
List of aquaria in the United States. This is a list of existing, reputable, public aquariums in the United States. For zoos, see List of zoos in the United States. Aquariums are facilities where animals are confined within tanks and displayed to the public, and in which they may also be bred. Such facilities include public aquariums, oceanariums, marine mammal parks, and dolphinariums.