Where did Margaret Floy Washburn go to college?

Where did Margaret Floy Washburn go to college?

Cornell University

Who studied with James Cattell?

Wilhelm Wundt

What is James Cattell recognized for in forensic psychology?

James McKeen Cattell examined the psychology of testimony The main research in forensic psychology investigated the psychology of testimony He led one of these early investigations in 1893 at Columbia University Cattell was one of the first American psychologists to stress on quantification, ranking, and ratings

Who coined the term mental test in 1890?

Cattell (1890; as cited in DuBois, 1970) invented the term “mental test” in his famous paper entitled “Mental Tests and Measurements”, which described his research programming detailing ten mental tests he proposed for use with the general public

Who coined the term mental test?

Galton’s efforts were followed up in the United States by psychologist James McKeen Cattell Cattell coined the term, “mental tests” to refer to Galtonian measures

How was IQ originally calculated?

IQ was originally computed as the ratio of mental age to chronological (physical) age, multiplied by 100 Thus, if a child of age 10 had a mental age of 12 (that is, performed on the test at the level of an average 12-year-old), the child was assigned an IQ of 1210 × 100, or 120

Why did Binet and Simon create an intelligence test?

The test was later revised by psychologist Lewis Terman and became known as the Stanford-Binet While Binet’s original intent was to use the test to identify children who needed additional academic assistance, the test soon became a means to identify those deemed “feeble-minded” by the eugenics movement

What is standardization validity and reliability?

reliability, validity, standardization Reliability •Reliability– consistency of measurement oTest-retest reliability– scores should be stable, consistent over time oInternal consistency – consistency of measurement within the test itself oInterjudge reliability – consistency of measurement when different people observe

What is considered good validity?

Generally, if the reliability of a standardized test is above 80, it is said to have very good reliability; if it is below 50, it would not be considered a very reliable test Validity refers to the accuracy of an assessment — whether or not it measures what it is supposed to measure

What is good concurrent validity?

Concurrent validity is a type of Criterion Validity Concurrent validity measures how well a new test compares to an well-established test It can also refer to the practice of concurrently testing two groups at the same time, or asking two different groups of people to take the same test

How do you know if a test is valid and reliable?

A reliable measurement is not always valid: the results might be reproducible, but they’re not necessarily correct A valid measurement is generally reliable: if a test produces accurate results, they should be reproducible

Can something be valid but not reliable?

A measure can be reliable but not valid, if it is measuring something very consistently but is consistently measuring the wrong construct Likewise, a measure can be valid but not reliable if it is measuring the right construct, but not doing so in a consistent manner

How can reliability be improved?

Here are six practical tips to help increase the reliability of your assessment:

1. Use enough questions to assess competence
2. Have a consistent environment for participants
3. Ensure participants are familiar with the assessment user interface
4. If using human raters, train them well
5. Measure reliability

What factors affect internal validity?

Here are some factors which affect internal validity:

• Subject variability
• Size of subject population
• Time given for the data collection or experimental treatment
• History
• Attrition
• Maturation
• Instrument/task sensitivity

What can affect internal validity?

The validity of your experiment depends on your experimental design What are threats to internal validity? There are eight threats to internal validity: history, maturation, instrumentation, testing, selection bias, regression to the mean, social interaction and attrition

What are the 8 threats to internal validity?

Eight threats to internal validity have been defined: history, maturation, testing, instrumentation, regression, selection, experimental mortality, and an interaction of threats

How can we prevent threats to internal validity?

Avoid assigning subjects to groups based on their extreme scores Recruit large groups of participants or more than needed for statistical analyses Include incentives and compensation as appropriate Utilize random selection (sampling) and random assignment of subjects

Does bias affect external validity?

Bias can affect both the internal validity and the external validity of a study A study that has major methodologic issues, however, lacks internal validity, and we probably should not accept the results If a study lacks internal validity, stop