Various psychologists and researchers have wrestled with the ways that young children are convinced of the existence of Santa Claus, and have wondered whether children's abilities to critically weigh real-world evidence may be undermined by their belief in this or other imaginary figures. For example, University of Texas psychology professor Jacqueline Woolley helped conduct a study that found, to the contrary, that children seemed competent in their use of logic, evidence, and comparative reasoning even though they might conclude that Santa Claus or other fanciful creatures were real: