Object Constancy

Object constancy is a principle of perceptual organization that refers to the ability of the brain to maintain a stable perception of an object, despite changes in its size, shape, orientation, or other aspects of its appearance. This ability allows us to recognize objects as the same, even when viewed from different angles or under different lighting conditions. Object constancy is important for navigating our environment and interacting with the world around us.

For example, imagine looking at a familiar object, such as a chair, from different angles. Despite the changes in its appearance, you can still recognize it as a chair and understand its purpose. This is because your brain is able to maintain a stable perception of the object, based on its learned knowledge of what a chair typically looks like.

Object constancy is a fundamental aspect of perception, and is essential for our ability to make sense of the world around us. It is also a key area of research in psychology and neuroscience, as it provides insights into how the brain processes and interprets sensory information.

Reference:

Brascamp, J. W., Knapen, T., & Blake, R. (2013). The dynamics of object perception. Trends in Cognitive Sciences, 17(2), 68-76.

Comments

ADVOKATE: A Mnemonic Tool for the Assessment of Eyewitness Evidence

ADVOKATE: A Mnemonic Tool for Assessment of Eyewitness Evidence A tool for assessing eyewitness ADVOKATE is a tool designed to assess eyewitness evidence and how much it is reliable. It requires the user to respond to several statements/questions. Forensic psychologists, police or investigative officer can do it. The mnemonic ADVOKATE stands for: A = amount of time under observation (event and act) D = distance from suspect V = visibility (night-day, lighting) O = obstruction to the view of the witness K = known or seen before when and where (suspect) A = any special reason for remembering the subject T = time-lapse (how long has it been since witness saw suspect) E = error or material discrepancy between the description given first or any subsequent accounts by a witness. Working with suspects (college.police.uk)

ICD-11 Criteria for Anorexia Nervosa (6B80)

ICD-11 Criteria for Anorexia Nervosa (6B80) Anorexia Nervosa is characterised by significantly low body weight for the individual’s height, age and developmental stage that is not due to another health condition or to the unavailability of food. A commonly used threshold is body mass index (BMI) less than 18.5 kg/m2 in adults and BMI-for-age under 5th percentile in children and adolescents. Rapid weight loss (e.g. more than 20% of total body weight within 6 months) may replace the low body weight guideline as long as other diagnostic requirements are met. Children and adolescents may exhibit failure to gain weight as expected based on the individual developmental trajectory rather than weight loss. Low body weight is accompanied by a persistent pattern of behaviours to prevent restoration of normal weight, which may include behaviours aimed at reducing energy intake (restricted eating), purging behaviours (e.g. self-induced vomiting, misuse of laxatives), and behaviours aimed at incr

ICD-11 Criteria for Depression (Recurrent Depressive Disorder) 6A71

ICD-11 Criteria for Depression (Recurrent Depressive Disorder) 6A71 Recurrent depressive disorder is characterised by a history or at least two depressive episodes separated by at least several months without significant mood disturbance. A depressive episode is characterised by a period of depressed mood or diminished interest in activities occurring most of the day, nearly every day during a period lasting at least two weeks accompanied by other symptoms such as difficulty concentrating, feelings of worthlessness or excessive or inappropriate guilt, hopelessness, recurrent thoughts of death or suicide, changes in appetite or sleep, psychomotor agitation or retardation, and reduced energy or fatigue. There have never been any prior manic, hypomanic, or mixed episodes, which would indicate the presence of a Bipolar disorder. Inclusions: Seasonal depressive disorder Exclusions: Adjustment disorder (6B43) Bipolar or related disorders (BlockL2‑6A6) Sing

Search This Blog