The Stroop effect is a psychological phenomenon that demonstrates the interference in reaction times when the processing of one type of information is disrupted by conflicting information from another type. It is most commonly illustrated through the Stroop color-naming task. In a typical Stroop task, participants are presented with words that are names of colors (e.g., "red," "blue," "green") printed in ink that is either congruent (e.g.
The Society for Psychophysiological Research (SPR) is an organization dedicated to advancing the understanding of the relationship between psychological processes and physiological responses. Founded in 1961, the SPR promotes research and education in the field of psychophysiology, which examines how psychological factors such as thoughts, emotions, and behaviors can affect physiological functions and vice versa. The society serves as a platform for researchers, clinicians, and educators to share findings, enhance collaboration, and disseminate knowledge in the field.
The sensory threshold refers to the minimum level of stimulus intensity that can be detected by the sensory organs and perceived by the brain. This concept is critical in psychology and neuroscience as it helps to understand how organisms interact with their environment. There are two main types of sensory thresholds: 1. **Absolute Threshold**: This is the smallest amount of stimulus energy that can be detected at least 50% of the time.
Sensory analysis is a scientific method used to evaluate and measure the sensory properties of products, particularly food and beverages, based on human perception. It involves using the senses—such as taste, smell, sight, touch, and hearing—to assess the attributes and quality of a product. This analysis can help in understanding how consumers perceive a product and can guide product development, quality control, and marketing strategies.
Sensometrics is a field that combines sensory science, statistics, and multivariate data analysis to analyze and interpret sensory data. It focuses on the measurement and modeling of sensory perceptions, typically related to food, beverages, cosmetics, and other products where human sensory experiences (like taste, smell, texture, and appearance) are critical for evaluation and quality control. Sensometrics employs various statistical techniques to assess consumer preferences, sensory attributes, and product characteristics.
A second-order stimulus, also known as a conditioned stimulus, refers to a stimulus that has become associated with an unconditioned stimulus through a process called second-order conditioning. In classical conditioning, an unconditioned stimulus (US) naturally elicits a response (unconditioned response, UR) without prior learning, such as food causing salivation in dogs.
In psychophysics, "roughness" refers to a quality of texture perception that pertains to how coarse or fine a surface feels to the touch. This can involve both tactile sensations and auditory perceptions, particularly in music and sound quality. 1. **Tactile Roughness**: This aspect relates to how the skin perceives surface textures. It is influenced by factors like the size, spacing, and geometry of the surface features.
The odor detection threshold is the minimum concentration of a substance that can be detected by the human sense of smell. It is the lowest level at which a particular odor can be perceived, and it can vary widely depending on the substance, the individual's sensitivity, and environmental factors. In scientific studies, the odor detection threshold is often quantified in terms of parts per million (ppm), milligrams per cubic meter (mg/m³), or other relevant units, depending on the context.
Nikolai Aleksandrovich Kozyrev (1908-1983) was a Soviet astronomer and physicist, known primarily for his work in astrophysics and for his controversial theories on the nature of time and space. He became notable for his research on the potential for physical effects arising from the gravitational influence of celestial bodies and for his hypothesis concerning the relationship between time and physical processes.
The Law of Comparative Judgment is a concept developed by British psychologist Louis Thurstone in the context of psychometrics and decision-making. It refers to a method for measuring preferences or perceptions by comparing different items against one another rather than evaluating them independently. In essence, the law posits that individuals make judgments not in absolute terms, but rather by comparing one item to another.
The Kruithof curve is a graphical representation that illustrates the relationship between the color temperature of light sources and the perceived brightness or illuminance of those sources. It helps to guide the selection of lighting based on the combination of color temperature (measured in Kelvin) and the illumination level (measured in lux). The curve itself indicates that: 1. **Lower color temperatures (warm white light)** can create a pleasant atmosphere at lower illumination levels (e.g., around 200 to 300 lux).
Korte's third law of apparent motion, also known as Korte's law or the Korte effect, relates to the perception of motion in visual stimuli, particularly in the field of psychology and visual perception. The law suggests that when two stationary objects are presented in close temporal succession, the observer perceives the first object as having moved toward the second object. This phenomenon occurs due to the brain's interpretation of the timing and position of the objects, leading to a misperception of motion.
The just-noticeable difference (JND), also known as the difference threshold or the minimal detectable difference, refers to the smallest change in a stimulus that can be detected by a sensory system. It represents the minimum amount of change that a person can perceive between two stimuli. The concept of JND is rooted in psychophysics, a field of study that examines the relationship between physical stimuli and the sensations and perceptions they produce.
The interstimulus interval (ISI) is the time interval between the presentation of one stimulus and the next stimulus in an experimental setting. It is a crucial parameter in various fields of psychology and neuroscience, especially in studies involving sensory perception, attention, and learning. In experimental designs, the ISI can influence how subjects process stimuli, as it can affect attention, memory encoding, and the ability to discriminate between stimuli.
Herschel Leibowitz is not widely recognized in mainstream literature or public knowledge. It's possible that he may be a private individual or a figure who hasn't gained significant attention in public records or public discourse.
The "Gunslinger effect" typically refers to a phenomenon observed in competitive environments, particularly in fields like sports or gaming, where individuals or teams make aggressive decisions or take high-risk actions in response to pressure or to compensate for perceived shortcomings. This term can also appear in contexts like trading or investments, where participants might overreach or take bold risks after a series of losses or failures.
Fergus W. Campbell is not widely known as a significant public figure, and there may be multiple individuals with that name.
Discrimination testing refers to various statistical tests and methodologies used to determine whether observed differences between groups are statistically significant. In different contexts, the term can have more specific meanings: 1. **Statistical Context**: In statistics, discrimination tests are methods used to assess whether two or more groups can be statistically differentiated based on certain characteristics or scores. For example, in psychometrics, discrimination testing might be used to evaluate whether a test can effectively differentiate between individuals of different ability levels.
The Coriolis effect refers to the apparent deflection of moving objects when they are viewed in a rotating reference frame, such as the Earth. This phenomenon is caused by the rotation of the Earth on its axis. In a rotating system, such as the Earth, objects moving over its surface appear to be deflected from their straight-line paths.
The contrast effect is a cognitive bias that occurs when the evaluation of something is influenced by the comparison to another item or experience that is perceived immediately before it. Essentially, the contrast effect can significantly impact our judgments and decisions by shaping how we perceive differences in qualities or attributes. For example, if a person is shown a series of job candidates, the characteristics and qualities of the candidates may stand out more distinctly depending on the order in which they are presented.

Pinned article: Introduction to the OurBigBook Project

Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
We have two killer features:
  1. topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculus
    Articles of different users are sorted by upvote within each article page. This feature is a bit like:
    • a Wikipedia where each user can have their own version of each article
    • a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
    This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
    Figure 1.
    Screenshot of the "Derivative" topic page
    . View it live at: ourbigbook.com/go/topic/derivative
  2. local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:
    This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
    Figure 5. . You can also edit articles on the Web editor without installing anything locally.
    Video 3.
    Edit locally and publish demo
    . Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact