README.md

In donaldRwilliams/litterEffects: Investigation of Litter Effects

litterEffects

Download package here:

devtools::install_github("donaldRwilliams/litterEffects")

(please restart R after installation)

This package is specifically for the research design discussed in the paper Between-litter variation in developmental studies of hormones and behavior: inflated false positives and diminished power.

Note. Many research areas—for example, natural variation in maternal care and prenatal stress—categorize entire litters based on maternal behavior or experimental condition. For example, litter mates from High-LG/Prenatal Stress and Low-LG/Prenatal Control dams are coded the same way. When groups are compared (0 vs. 1), unaccounted for between-litter variation (i.e., dependent measures) violates the statistical assumption of independence. Use of a t-test would be incorrect for this research design. This package provides methods to address this issue.

Williams, D., Carlsson, R., & Bürkner, P.-C. (2017, June 10). Between-litter variation in developmental studies of hormones and behavior: inflated false positives and diminished power. Retrieved from osf.io/preprints/psyarxiv/z9hwx link to paper (pre-print)

Tutorial

LitterEffects: Tutorial SEE HERE

donaldRwilliams/litterEffects documentation built on May 30, 2019, 9:42 p.m.