some topics can fall on either side of I/O -ppl tend to think of I/O psych as an integrative area
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scientist practitioner model
-apply existing science to new problems -use current problems to direct new science *they work together*
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career as an I/O psychologist
*applied* -external consulting -internal consulting -usually requires masters *academic* -professor at universities -researchers at I/O related research institutes -requires PhD degrees
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Hugo munsterberg
-father of I/O psychology -measured the ability of workers and tied to performance -"Psychology and industrial efficiency"
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James cattell
-legitimized psychology as a field (first psych professor ever) -first to realize the importance of individual differences -developed mental tests (reaction time, memory, sensory)
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WW1: mass group testing
walter dill scott and walter van dyke bingham -adapted the standford-binet intelligence test -developed the army alpha intelligence test -mental ability testing became commonplace in work setting after the war ended
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army alpha
a test developed during world war one -determined soldiers capabilities of serving, job classification and potential for leadership position
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Fredrick taylor
-Engineer who tried to increase economic efficiency -SCIENTIFIC MANAGEMENT
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scientific management
-jobs can be scientifically studied -need a match between workers abilities and job tasks -money is the workers prime motivator
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Time and motion studies (scientific management)
-break every action down into parts -time those movements with a stopwatch -develop new and more efficient movements
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Lilian Gilbreth
-first PhD in I/O psychology -Applied the principles of scientific management to work environment
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Coca cola and hard Hollingworth
-helped convince fed gov that caffeine isn't harmful -Hollingworth found that in normal amounts, caffeine enhanced performance
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was industrial psychology accepted early on?
YES
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some early applications of I/O
-how to interview farmers -the effect of perfume on emotions -the correct height for worker benches -the differences in buying habits of men and women -the hours of the day when advertising was most effective
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hawthorne studies
-Elton Mayo -varied workplace conditions to find out what helps/hinders performance (e.g more or less light) -performance always improved
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why did the hawthorne studies work
-hawthorne effect and money isn't the only motivator to work
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Hawthorne effect
workers improved their productivity because they believed that people were paying attention to them
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does attitude play a role in productivity?
yes
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what changed because of the human relations movement?
-before researchers thought of workers as interchangeable parts -now researchers started to care more about workers emotions (e.g. motivation, job satisfaction, work stress)
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how did I/O play a role in WWII?
-army general classification test as a selection tool -helped design aircraft cockpits -developed the way to pick overseas spies for the Office of Strategic Services
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what did the civil rights act of 1964 do?
- no more discrimination practices in the work place -forced organizations to reexamine their selection and promotion practices -developed standards for fair and unbiased testing and selection (making sure the selection is relevant to job duties)
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what subgroups are protected by the civil rights act of 1964?
race, color, religion, sex, or national origin
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griggs V. duke power co. (1971)
-they demanded IQ test and high school diploma for higher level jobs (not related to performance and many african americans had lower scores and not as many diplomas) -ruling decided that the tests must be reasonably related to performance
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what year did it change from industrial psych to industrial organizational?
1973
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SIOP
-founded in 1982 -information for students; jobs, internships, grad school applications
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construct validity
the variable is measuring the construct as is designed to measure (quality of operationalization)
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convergent validity
measures designed to assess the same construct are strongly correlated
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discriminant validity
measures designed to assess different constructs are not strongly correlated
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criterion related validity
the rest is successfully predicting performance two types: predictive validity, concurrent validity
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concurrent validity
performance measure is collected at the same time as the predictor is collected
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predictive validity
performance measure is collected sometime after the predictor is collected
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internal validity
how well an experiment is done especially whether it avoids confounding variable
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external validity
how well the conclusions of research can be generalized to other situations
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meta analysis
stat technique for improving external validity
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big data
using large data sets to examine relationships among variables and to make organizational decisions based on such data
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what is a potential risk of big data?
large data sets are good at ID significant correlations but such data sets don't indicate which ones are meaningful or important
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why do I/O psychologists do scientific research?
-common sense is often wrong -there can be legal consequences for not doing scientific research
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how to conduct scientific research?
research question --\> hypothesis --\> data collection --\> stat analysis --\> conclusion
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construct
psychological concept or characteristic that were trying to measure (intangible e.g Intelligence) - RESEARCH QUESTION "theory world"
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variable
an operationalization of a psychological concept that can vary (tangible e.g ACT scores) -HYPOTHESIS "data world"
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independent variable
the cause -what is manipulated
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dependent variable
the effect -what changes because of the IV
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mediators
the intermediate link (mechanism) in a causal chain *How and Why* -key words: operates through, leads to, which then leads to, influence through example- it is easier for smart people to learn more job skills, which can improve their job performance
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moderation
the boundary condition of a causal chain *When* -key words: Depends on, in the condition of, when example: intelligence is more related to performance if the job is complex than if the job is simple
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experimental design
-manipulation and random assignment -used to detect cause and effect relationships
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quasi experimental design
-there is manipulation but no random assignment -problems: selection bias; it is likely that group A workers are more productive than group B workers before the manipulation
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non experimental design
-doesnt include manipulation of variables or random assignment -examples: observational design, survey design
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observational design
researcher observes employees in organizational settings
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survey design
series of questions used to study one or more variable of interest (most frequently used in I/O)
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two types of research settings
lab and field studies
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it is easier to control research design in \___________ but it is difficult to \___________ research results
labs, generalize
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qualitative methods
-rely on narrative descriptions of events or process e.g observations, interviews, case studies
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quantitative methods
-can perform direct stat analysis on data -I/O psychology research mostly relies on quantitative methods -most frequently used questionnaire format: likert-type scale e.g. tests, questionnaires, rating scales
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why can't we just eyeball data?
eyeball testing doesn't consider random error; we need objective criteria and not subjective judgement
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T-test
-mean differences -two groups
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anova
-mean differences -more than 2 groups
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how do we compare mean differences
- we use p< 0.05 as the evidence for stat significance -if a difference is significant at p \= .05 it means the difference would be expected to occur only 5 times out of 100 as a result to chance alone
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correlation
is there a relationship between intelligence and job performance -1 IV and 1 DV
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Multiple regression
how do intelligence personality and vocational interest predict job performance -more than one IV & 1 DV
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correlation coefficient
- represents the liner relationship between two variables -captures both the direction and strength of linear relationship -ranges btw -1 to 1 1\> r \> 0- positive relationship r\= 0 -no relationship -1
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correlation \________ indicate causal effects
DOES NOT
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range restriction
the correlation decreases when there is less variability on one of the variables of interest
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idea of P value
-the probability that the data would have occurred if the hypothesis was a null hypothesis -if any difference/relationship is significant at p\=.05, it means the difference would be expected to occur only 5 times out of 100 as a result of chance alone - in other words theres only 5% chance that the difference is attributed to random error
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reliability
the consistency or stability of a measure
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validity
the accuracy of inferences made based on data (validity of research design), or the accuracy of the representation of a construct (validity of measure)
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how to test reliability of measure
-test- retest reliability -equivalent forms reliability -internal consistency reliability
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reliability of rating
inter rater reliability
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test retest reliability
give a group a test, wait, give same group same test again and commute the correlation between both test scores Problem: ppl may remember the content from the test the first time
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equivalent forms reliability
give a group version 1 of a test, give a group version 2 of a test compute the correlation between the scores of the 2 tests Problem: how can you guarantee the two tests are equivalent
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internal consistency reliability
assuming all items on the test measure a homogeneous attribute, we can split the test to assess reliability -positively related to the number of items
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split half reliability
compute the correlation between even numbered and odd numbered items
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cronbachs alpha
compute the average correlation between every pair of test items (most popular) -most frequently used form of reliability in I/O psychology -alpha \> .7 is good reliability
-doesnt require you to decide how to split a test into two halves -doesnt require two equivalent forms - doesn't require retesting your sample
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inter rater reliability
the level of agreement among ratings from different raters on the same target
ask rater 1 to provide a rating for Z, ask rater 2 to provide a rating for Z, compute correlation among rater 1 and 2 scores
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job analysis
a purposeful, systematic process for collecting information on the important work and worker related aspects of a job -ID behaviors required to perform a job -ID human attributes necessary for successful performance in a given job
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KSAOS
Knowledge Skils Abilities Other characteristics
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knowledge
domain specific facts and information (declarative knowledge; know what)
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skills
practiced acts (procedural knowledge; know how)
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Abilities
the capacity to engage in specific acts
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other characteristics
things like personality, interests, experience
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why do job analysis?
-job analysis provides the foundations for any integrated HR system -help define standards of performance -mandated by legal requirements
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how is recruiting job analysis?
job analysis is often included in job positioning
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how is selection job analysis?
the development of selection tests is based on job analysis
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how is training job analysis?
helps us identify the areas of performance that create the greatest challenge for people who hold those positions
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how is compensation job analysis?
job tasks identified through job analysis can be used to determine the comparative value of each job
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how is promotion/job assignment related to job analysis?
allow organizations to identify logical career paths and the possibility of transfer from one job ladder also describe levels of promotion
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criterion development
how do you define performance in this job role
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performance evaluation
the development of performance evaluation systems is an extension of the job analysis
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task oriented
describes the tasks that are required in the job -what do employees do?
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worker oriented
focuses on the human characteristics needed to perform the job -what attributes help the individual to perform the task?
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two types of job analysis
-task oriented -worker oriented
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two components of job analysis
-behavior required to perform a job -human attributes (KSAOs) necessary for successful performance in a given job
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how to conduct job analysis?
-observation -interviews -questionnaires/surveys -critical incidents & work diaries
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subject matter experts
employees/incombents (or their supervisors) who have accumulated "expertise" in the "subject matter" of the job
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observation
simply watch SMEs perform their jobs and take notes
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interviews: incumbent, supervisor
most effective when based on observation, other analyses of related jobs, prior discussion with related personnel
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questionnaires/surveys
SMEs are asked to rate behaviors/attributes on importance, frequency, needed at entry -can be statistically analyzed to provide objective record
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O*NET
occupational information network -a collection of electronic databases based on well developed taxonomies of occupation related information -result of large scale jobs analysis; developed by I/O psychologists -created to replace dictionary of occupational titles