582 effect sizes examining the ease-of-retrieval effect from a meta-analysis by Weingarten and Hutchinson (2018)

The data set contains correlation coefficients between the manipulation and outcome variable (r_xy), sample sizes (N), and various study characteristics including publication status, country (USA vs. other), number of few and many examples requested, whether the trial targeted episodic memory, paradigm type (standard vs. other), dataset type (proximal vs. distal), and mediation variables (r_xm, r_my). The meta-analysis examined whether subjective ease mediates the ease-of-retrieval effect, where participants list either few or many examples and then make judgments (Weingarten and Hutchinson 2018) .

Usage

Weingarten2018

Format

A data.frame with 12 columns and 582 observations:

r_xy

Correlation between manipulation and outcome.

N

Sample size.

paper_id

Paper identifier.

published

Publication-status indicator.

USA

Whether the study was conducted in the USA.

number_of_few

Number of examples in the few-examples condition.

number_of_many

Number of examples in the many-examples condition.

episodic_memory

Whether the trial targeted episodic memory.

standard_paradigm

Whether the standard paradigm was used.

proximal_dataset

Whether the data set was proximal.

r_xm

Correlation between manipulation and mediator.

r_my

Correlation between mediator and outcome.

References

Weingarten E, Hutchinson JW (2018). “Does ease mediate the ease-of-retrieval effect? A meta-analysis.” Psychological Bulletin, 144(3), 227–283. doi:10.1037/bul0000122 .