Attention bias refers to the tendency of individuals to focus on certain stimuli while ignoring others, often influenced by their emotions, experiences, or expectations. For example, someone who has had a negative experience with a dog may pay more attention to dogs in their environment, potentially perceiving them as more threatening than they are. This cognitive phenomenon can affect decision-making and perception in various contexts, such as advertising or social interactions. By selectively concentrating on specific information, individuals may overlook important details, leading to skewed judgments or reactions based on their biased attention.