PSYC 2490 Chapter Notes - Chapter 4: Statistical Significance

• School: University of Manitoba
• Department: Psychology
• Course: PSYC 2490
• Professor: Janine M.Montgomery

Document Summary

Higher the absolute value, the stronger the relationship: statistical and clinical significance, statistical significance = asserts that a correlation was unlikely to have occurred by chance. Less than 5 in 100 (due to chance) Alpha level = level of significance, p < . 05. Higher r = less likely to have occurred by chance o not statistically significant correlation does not provide evidence for an important relationship o statistical significance influenced by size of relationship between variables and sample size o. = researcher tests whether causes are present before a disorder has developed. Studies participants over time o cross-sectional design = the causes and effects are measured at the same point in time o high-risk method = only evaluates those at high risk for developing the target problem. 1) prevalence the proportion of people with disorder either currently or during their lifetime. 2) incidence the proportion of people who develop new cases of the disorder in some period, usually a year.