A branch of psychology that applies the principles of psychology to work-setting
Major Fields of I/O Psychology
Personnel Psychology
Organizational Psychology
Human Factors/Ergonomics
Personnel Psychology
Analyzing jobs, recruiting applicants, selecting employees, etc.
Organizational Psychology
Deals with issues of leadership, employee motivation, organizational management, etc.
Human Factors/Ergonomics
Workplace design, human-machine interaction, physical fatigue, and stress
Utilized testing the mental ability of recruits (Army Alpha test for those who can read and Army Beta test for those who cannot)
World War I
On the quality of work environment
Hawthorne studies
Hawthorne effect
Change of behavior due to being observed
Science
Backed by a logical approach to investigation, based on a hypothesis or curiosity about an object of interest
Relies on data
Must be communicable, open, and public
Scientific method to find the cause of termination
1. Work performance
2. KSAOs (skills, knowledge, and abilities) of the employee
3. Training, educational background, and credentials
Experimental
Cause-and-effect relationships
Experiment
Manipulation of one or more independent variables
Random assignment of participants to experimental and control conditions
Quasi-experimental
Type of research design that attempts to establish a cause-and-effect relationship without random assignment
Non-experimental
Does not include any treatment or assignment to different conditions, gathers information without condition or treatment
Hypothesis
Educated guess/ assumptions
Theory
Collection of ideas or principles that guides an explanation of a phenomenon
Research Design
Framework of research methods and techniques used by the researcher
Cause and effect relationships
Relationship between events or things, where one is the result of the other
Independent Variables (I.V.)
Factor that you want to change or control in order to determine its effects
Dependent Variables (D.V.)
Factor that responds (effects) to the change of I.V
Experimental Group
Receives the experimental procedure
Control Group
Group separated from the experiment such that the I.V being tested cannot influence the experiment results
Quantitative Research
Conveyed in numbers and graphs to test or confirm the assumptions, includes experiments, recorded observations, and surveys with close-ended questions
Qualitative Research
Conveyed in words, used to understand concepts, ideas, or experiences
Descriptive statistics
Describes the distribution of scores collected by determining the frequency of each score, usually represented by a graph with two axes
Measures of Central Tendency
Mean
Median
Mode
Positive skew or right skewed
Scores are clustered towards the lower range (lower scores) of the distribution, Mean and Median scores will always be higher than the Mode
Negative skew or left skewed
Scores are clustered towards the higher range of the distribution, Mean and Median Scores is always lower or less than the Mode
Variance (S2)
Calculated as the average squared deviation of each score from the mean score of a data set
Inferential statistics
Allows to make predictions ("inferences") from that data, uses statistical tests such as the t-test, ANOVA, or chi-square test to compare sample data to other samples or to previous research
Statistical Significance
Helps quantify whether a statistic outcome is a result of chance or to some other factor or variable
Statistical Power
The likelihood of finding a statistically significant difference when a true difference exists
Correlation coefficients
Measures how strong a relationship is between two variables, ranges between -1.00 and 1.00, the higher the value, the stronger the correlation
Scatterplot graph
Used to display the correlational relationship between two variables
Differential Psychology
Study of differences
Psychometrics
The actual measurement of abilities, when put into metrics or scales
Identifying Individual Differences
Thinking pattern
Cognitive ability
Physical ability
Interests
Knowledge
Personality
Emotions
Intelligence
Ability of an individual to learn and adapt to his environment
Carroll's Theory of Cognitive Abilities
Three layers or strata: stratum I (narrow abilities), stratum II (broad abilities), stratum III (consist of g or general mental ability)
Highest is "g"; (general intelligence)
Middle layer consists of seven specific cognitive abilities: fluid intelligence, crystallized intelligence, short term memory, visual perception, information retrieval, auditory perception, and cognitive speed
Bottom layer consists of specific abilities connected with the middle layer (broad abilities)
Fluid Intelligence (GF)
Mental operations that a person uses, includes forming and recognizing concepts, problem-solving, and reorganizing data