agememory: Age Differences in Episodic Memory
In mpt: Multinomial Processing Tree Models

agememory

R Documentation

Age Differences in Episodic Memory

Description

Bayen (1990) presented 40 younger and 40 older adults with a list of 50 words to be learned. The list consisted of 20 semantic word pairs and 10 singleton words. In a later memory test, participants freely recalled the presented words. For pairs, responses were classified into four categories: both words in a pair are recalled adjacently (E1) or non-adjacently (E2), one word in a pair is recalled (E3), neither word in a pair is recalled (E4); for singletons, into two categories: word recalled (F1), word not recalled (F2).

The recall frequencies are available in Schmidt et al. (2023).

Usage

data(agememory)

Format

agememory A data frame containing 80 observations of 15 variables:

group: factor. Younger versus older group of participants.
id: participant ID within each group.
age: participant age.
sex: factor. Participant sex.
IST70: intelligence score.
lag0E1, lag0E2, lag0E3, lag0E4: recall frequencies for word pairs presented without lag.
lag15E1, lag15E2, lag15E3, lag15E4: recall frequencies for word pairs presented with a lag of 15 items in between the two pair members.
F1, F2: recall frequencies for singleton words.

Source

Schmidt, O., Erdfelder, E., & Heck, D. W. (2023). How to develop, test, and extend multinomial processing tree models: A tutorial. Psychological Methods. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1037/met0000561")}

References

Bayen, U.J. (1990). Zur Lokalisation von Altersdifferenzen im episodischen Gedaechtnis Erwachsener: Eine Querschnittsuntersuchung auf der Basis eines mathematischen Modells. Berichte aus dem Psychologischen Institut der Universitaet Bonn, 16, 1–125.

Examples

data(agememory)

aggregate(cbind(lag0E1, lag0E2, lag0E3, lag0E4,
                lag15E1, lag15E2, lag15E3, lag15E4, F1, F2) ~ group,
          data = agememory, sum)
xtabs(~ group + sex, agememory) |> addmargins()

mpt documentation built on Oct. 11, 2024, 5:07 p.m.