Questions tagged [measurement]

For questions about techniques for measuring psychological and neural properties. Includes the measurement of knowledge, abilities, attitudes, and personality traits, as well as neural structure, organization, activity, and complexity.

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Could someone tell me how the FAS verbal fluency test is scored?

Is the number of correct words in all three categories summed or is the average used? Also, are the words written down or are they collected verbally? Thanks.
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How exactly does one determine the measuring ability of an item according to IRT?

I'll outline my suspicions, so as to better aid an answerer with where I'm at knowledge- and understanding-wise. So, we have some unidimensional, latent and presumably measurable trait. If we're ...
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Is there a negative correlation between IQ and likelihood of ending up stressed out by a certain task/job?

I searched for stress and IQ correlation research papers, but could only find ones claiming that stress lowers IQ - that's not exactly the same thing.
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How to evaluate the convergence of a staircase?

I have a 2AFC staircase, with transformed up and down method (2up 1 down) or (2down 1 up), with equal step size (at the beginning there are higher step sizes, at the end there are the lower value). ...
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What does psychometrics tell us about a needed (x IQ) of a leader necessary to succesfully and efficently lead number (y) of people with a μ z IQ?

I started looking on my own, and I found "the optimal IQ for perceived leadership will appear at about 1.2 standard deviations above the mean IQ of the group membership" https://doi.apa.org/...
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Reducing self-selection bias by controlling for motivation to fill in the survey

The self-selection bias refers to the overrepresentation of people willing to participate in research among studies' participants. The bias could be particularly relevant in surveys relevant to ...
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How to determine the sample size for a Confirmatory Factor Analysis CFA

I'm in the process of developing a scale. Overall, my question is how do I determine how many participants to include in my sample for the first Confirmatory Factor Analysis procedure? More ...
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Any good research on the comparative rates of CSA in different populations? (religious vs none religious, Mormon, catholic, etc)

I'm wondering if there is any good research on the rates of CSA in different populations.
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Complete digital copy of a brain: What are the main data metrics?

For the field of a theoretical scenario, future scientists map the body of an arthropod which has about 100,000 neurons and duplicate a precise copy of the animal onto SSD, including the dendrite ...
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What is the causal relationship between Adaptability and long term life success? [closed]

Adhering to the Big Five: Plasticity, being comprised of openness to experiences and extraversion, involves dispositions toward exploration, flexibility, adapting to novel situations, questioning ...
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Name for the ability to accept and react positively to challenges?

I am surveying early-stage entrepreneurs. The phenomenon I really want is their ability to clearly see, accept, and positively act on, difficulties -- maybe with their company, maybe their product, ...
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What are the ways to measure stress levels regularly at home?

What methods are available for collecting data on a human's stress levels? That is, suppose someone wanted to collect weekly/daily/hourly readings of their stress levels (e.g. in order to use the data ...
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Do you need need to have an above average IQ in order to have a reasonable chance of successful career in STEM fields?

Particularly engineering, computer science, math. I came across this quote from someone who specializes in psychometrics in response to this question. Is it scientifically proven if hard work in STEM ...
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How was the infant IQ test applied to Koko?

Apparently, a Gorilla named Koko took a number of IQ tests and scored an average of 80, their full range of scores being 70 to 95. The test used was the Cattell Infant Intelligence Scale. I don't ...
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What Action Units (AU) from the FACS can be combined together independetly of each other?

There exist many "impossible" combinations of AUs, let's say 45+46 for example or 18+27 etc. i.e. combinations of AU that can not possibly be expressed because they "occupy" the ...
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Is it possible for the human intelligence quotient to grow above 270? [duplicate]

I read about a person who had 263 IQ points, and apparently, that is the most that have ever been recorded. What is the maximum possible IQ for anyone to have? https://sciencetrends.com/highest-...
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Is there a significant cognitive difference between a person with 100IQ and a person 105IQ versus a person with a 150IQ and a person with a 180IQ?

So basically my question centres around cognitive differences by IQ classifications. So I saw somewhere (roughly) that the difference between someone with 150 and someone with 180 is very small ...
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Are there results on the null hypothesis of the "surgeon operating on my son" question?

There is a common question used to demonstrate the power of implicit assumptions about gender roles in our society. Including it here for reference: A man and his son had a terrible car accident and ...
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Competitiveness Analysis

I have developed a fitness website where users can exercise in a video call. My claim is that the website i designed increases the level of competition when exercising together with a peer compared to ...
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Can our dreams tell us anything useful about ourselves?

This question is related to What is the current "accepted" science behind dream interpretation?, but here I am asking something more specific. Dream reports, also known as sleep mentation ...
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1 answer
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Isn't fluid intelligence necessarily influenced by crystallized intelligence?

In this article, it is said: Conversely, Gf [general fluid intelligence] represents the ability to employ a type of mental operation to independently reason and solve novel problems; it does not ...
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gender related activism scale

I'm looking for a self-report measure that assesses involvement and interest in activism that centers around gender equity, including (but not limited to) topics like gender equality, segregation and ...
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Making a risk assessment type scale using existing scales

I am trying to make a risk assessment type scale that measures the likelihood/risk of someone experiencing a psychological disorder in a setting. There are about 10 factors (e.g., gender, sleep ...
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1 answer
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Are dedicated response boxes really better in precision than regular keyboards?

There are various (very pricey) commercial response boxes or pads (perhaps most notably Cedrus) that purportedly offer higher precision than regular keyboards. (Note that my question focuses on ...
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Do different ethnic groups have the same standard deviation of the IQ distribution?

There is a lot of research suggesting that different ethnic groups either within US or worldwide if all plotted together would have distributions of IQ with different averages. The reasons for that ...
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What is verbal memory useful for?

A friend of mine did the Verbal Memory Test at http://humanbenchmark.com/ and got an extremely high score (almost 300 words). English is not his first language and he knew the meaning of only about ...
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Is there a correlation between long-term memory and academic success in STEM?

There are underlying fundamentals and first principles, especially in STEM that continue to be built upon but can get neglected and forgotten over time without practice. Obviously having a great ...
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6 votes
1 answer
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Is there a theoretical maximum for IQ?

In "Eugenics: A Reassessment" Richard Lynn writes: The intelligence level of the population would be expected to stabilize at its theoretical maximum of around 200 after six or seven ...
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What are standardized and scalable methods to assess free recall?

In cognitive psychology and education literature, free recall test is usually compared with recognition test (through multiple-choice questions) and the former is favored as a more reliable measure of ...
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2 votes
1 answer
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What measure or criteria wording can be used to track trends in p factor?

Background: you can use factor analysis on mental illness to get a general psychopathology factor, like the g factor in intelligence but instead a general mental illness factor. https://www.ncbi.nlm....
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What are the values of the absolute intracellular and absolute extracellular potentials in a neuron?

Most texts on neurons give the value of the membrane potential and do not state the absolute values of the intracellular and extracellular potentials in a neuron. I understand that this is because the ...
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What is the minimum sample size for establishing the construct and especially concurrent validity of an intelligence test?

For example, the Shipley has a sample size of 263 for concurrent validity and I'm wondering if this is enough. Also, this is a stretch, but does anyone know the concurrent validity of the Figure ...
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Psychometric scales of gender

I have never read any study that has used a psychometric scale to find out the respondent's gender identity, sexual orientation or both. This makes me wonder if there are such scales or not, or if ...
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How is the mean for the Cattell IQ tests calculated?

British Mensa uses Cattell Culture Fair and Cattell III B tests. The Cattell Culture Fair Test has a mean and SD of 100 and 16 respectively. The Cattell III B has a mean and SD of 100 and 24 ...
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Which items of the NEO-FFI are a subset of the NEO-PI-R?

I am currently working on a NEO-PI-R dataset that is freely available online. To my knowledge the NEO-FFI is a subset of the NEO-PI-R. I would like to run a factor analysis on the NEO-FFI. ...
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4 votes
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What are the most often used questionnaires in psychology?

As the title says, I am wondering which questionnaires are most often used in psychology. My guess is that NEO-PI-R should be in the Top-10. One of the accompanying papers has been cited 38k times (...
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2 votes
1 answer
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Must researchers pay to use items (but not scoring) from standardized tests?

I would like to use the items from a standardized test in a research study. I would like to know whether I need to pay to use the items for this purpose? Or are the items alone potentially free, ...
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Why are flat line EEG recordings not perfectly zero microvolt?

I just look at several flat line EEG brain waves and all of them are not exactly at zero microvolt, in the sense there seems to be always a small signal or irregularities to be seen, as well as ...
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1 vote
1 answer
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Psychological analysis of diary data [closed]

I am using the app Daylio and I have already get 160 days and over 300 records. App itself has the ability to analyze data, very simple and weak. E.g, what activities take place together; how the mood ...
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Is Rotter's Interpersonal Trust Scale fixed?

I am new to psychology and recently have been looking for a metric of trust. I found that Rotter's Interpersonal Trust Scale (IST) is widely used, so I checked the original paper published by Rotter ...
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DSM-5 Assessments for App (electronic) use [closed]

I'm a budding entrepreneur building an app in the health and wellness space. As a part of the onboarding and user journey experience, I'm thinking of incorporating all DSM-5 assessments in my app, ...
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Method and sample size to test validity and reliability of a scale/ survey

I am working on a project where I need to use a scale to measure certain psychological and political positions. I have a questionnaire that is used in the US, and whose validity was tested there quite ...
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2 votes
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Where and why would "skill" not increase monotonically with time invested?

I'm a fan of games and activities with steep learning curves and high skill ceilings, and very precarious lines between success and failure. Such success may not be strictly linear or predictable (e.g....
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Horror Movies, PTSD and The Mere-Exposure Effect

Some people say that they get PTSD from horror movies, yet there are some researches done that claim that horror movies help fight against stress and even PTSD. https://www.nationalgeographic.com/...
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1 answer
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What is the best method for identifying single participants in EMA studies?

I am currently working on an ecological momentary assessment research project. I can't seem to find a clear answer in literature review to this question. My problem is when observations reach to ...
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2 votes
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Non-binary scores for backward digit span (BDS)

A common test of memory span is to display or utter a sequence of numbers and then request that a candidate being assessed repeat that sequence of numbers in reverse order. Typically, the candidate's ...
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2 votes
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How does cognitive load and learning effect compare in carousel vs. matrix views of a likert study?

I am looking for any papers or analysis on the use of a carousel vs. a matrix layout for a likert-style study. I have the broad impression a carousel is used for images or certain studies where each ...
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Is Cronbach's alpha used outside of psychology?

Tau-equivalent reliability ($\rho$$T$), also known as Cronbach's alpha is a widely used measure of reliability in psychological testing. I've not encountered Cronbach's alpha in other sectors. Does ...
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Best tests or questionnaires to measure person's ability to love

What are the best methods (questionnaires/tests/etc) to measure ability to love? So far I see those Light Triad Test (described in Scientific American) Big Five personality traits (OCEAN model) - ...
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2 votes
2 answers
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How are IQ test scores affected by psychological stress or trauma?

Does mental stress or trauma have a significant impact on IQ test performance relative to baseline, and if so, how much? For example, if a person is affected by abuse, bullying, neglect, or some other ...
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