How We Retrieve Our Knowledge About the World
Our concepts of people, objects, and events are composed of sensory impressions and actions associated with them, in addition to abstract symbol-like features. To understand the world, we arrange individual objects, people, and events into different categories or concepts. Concepts such as ‘the telephone’ consist primarily of visible features, i.e. shape and color, and sounds, such as ringing. In addition, there are actions, i.e. how we use a telephone.
Experts Debate on the True Incidence and Overdiagnosis of PTSD
Some clinicians are concerned that post-traumatic stress disorder (PTSD) diagnosis has risen throughout Western society since the late 1980s. Is this correct? And if so, has the true incidence of PTSD really spiraled out of control, or has it simply become overdiagnosed?
Short-Term Exposure to Air Pollution May Impede Cognition; Aspirin Could Help
Exposure to air pollution, even over the course of just a few weeks, can impede mental performance, according to a new study. However, these adverse effects were lessened in people taking nonsteroidal anti-inflammatory drugs (NSAIDs) like aspirin. The study is among the first to explore short-term air pollution exposures and the use of NSAIDs to mitigate their effects.