Overview

Last update: 23 October 2026

Study	Effect expected	N	Trials	M	Hits (%)	t	p	ES	BF	Direction	Year	Lab/Online	Prereg.	Published
Smokers 1 Exp	✔	122	400	196.70	50.82	-3.69	0	-0.33	66.06	different	2015	🏠	✖	Maier & Dechamps, 2018
Smokers 1 Con	✖	132	400	200.53	49.87	0.63	0.53	0.05	0.16	different	2015	🏠	✖	Maier & Dechamps, 2018
Loving Kind	✔	171	100	49.73	49.73	-0.73	0.77	-0.06	0.30	greater	2016	🏠	internal	–
Monks T1 Exp	✔	23	400	202.35	50.59	1.64	0.06	0.34	1.82	greater	2016	🏠	✖	–
Monks T1 Con	✖	29	400	198.34	49.59	-0.91	0.81	-0.17	0.49	greater	2016	🏠	✖	–
Monks T2 Exp	✔	23	400	201.35	50.34	0.81	0.21	0.17	1.05	greater	2016	🏠	✖	–
Monks T2 Con	✖	29	400	199.79	49.95	-0.12	0.55	-0.02	0.65	greater	2016	🏠	✖	–
Meditation T1	✖	40	100	49.27	49.27	-0.80	0.78	-0.13	0.47	greater	2016	🌍	✖	–
Meditation T2	✔	48	100	50.23	50.23	0.35	0.36	0.05	0.75	greater	2016	🌍	✖	–
All-will-be-good	✔	38	100	49.71	49.71	-0.35	0.64	-0.06	0.47	greater	2016	🏠	✖	–
Smokers 2 Exp	✔	175	400	200.29	49.93	0.37	0.64	0.03	0.09	less	2016	🏠	✔	Maier & Dechamps, 2018
Smokers 2 Con	✖	220	400	198.98	50.25	-1.46	0.07	-0.10	0.55	less	2016	🏠	✔	Maier & Dechamps, 2018
Relaxation	✔	12571	100	50.02	50.02	0.39	0.35	0.00	0.10	greater	2016	🌍	✖	Maier et al., 2018
Prayer	✔	431	100	49.64	49.64	-1.56	0.94	-0.08	0.14	greater	2017	🌍	✖	–
Sound preference	✔	70	40	20.31	50.79	0.90	0.19	0.11	1.20	greater	2017	🏠	✖	–
One-armed Bandit	✔	40	200	101.12	50.56	1.15	0.13	0.18	1.27	greater	2017	🏠	internal	–
Coin Toss	✔	40	200	100.53	50.26	0.43	0.33	0.07	0.80	greater	2017	🏠	✖	–
Incongruence Exp	✔	236	10	5.18	51.82	1.77	0.04	0.12	2.24	greater	2017	🌍	✔	Jakob et al., 2020
Incongruence Con	✖	271	10	5.04	50.44	0.47	0.32	0.03	0.54	greater	2017	🌍	✔	Jakob et al., 2020
Smokers 3	✔	203	400	199.14	50.22	-1.21	0.11	-0.09	0.40	less	2017	🏠	✔	Dechamps & Maier, 2019
Erotic Images 1	✔	241	200	100.51	50.26	1.08	0.14	0.07	0.97	greater	2017	🌍	✖	–
Erotic Images 2	✔	678	50	25.13	50.26	0.95	0.17	0.04	0.64	greater	2017	🌍	✖	–
Psyscanner Style 1 Exp	✔	1400	30	15.18	50.60	2.51	0.01	0.07	10.41	greater	2018	🌍	✔	Jakob et al., 2024
Psyscanner Style 1 Con	✖	1003	30	15.06	50.21	0.73	0.23	0.02	0.54	greater	2018	🌍	✔	Jakob et al., 2024
Psyscanner Style 2 Exp	✔	1308	30	15.06	50.19	0.78	0.22	0.02	0.50	greater	2018	🌍	✔	Jakob et al., 2024
Psyscanner Style 2 Con	✖	1095	30	15.17	50.58	2.08	0.02	0.06	4.32	greater	2018	🌍	✔	Jakob et al., 2024
Psyscanner Style 3 Exp	✔	1462	30	15.05	50.16	0.68	0.25	0.02	0.41	greater	2018	🌍	✔	Jakob et al., 2024
Psyscanner Style 3 Con	✖	941	30	14.88	49.61	-1.37	0.91	-0.04	0.10	greater	2018	🌍	✔	Jakob et al., 2024
Priming 1 Exp	✔	4092	20	10.10	50.51	2.89	0	0.05	19.80	greater	2018	🌍	✖	Dechamps et al., 2021
Priming 1 Con	✖	4092	20	10.03	50.13	0.73	0.23	0.01	0.23	greater	2018	🌍	✖	Dechamps et al., 2021
Priming 2 Exp	✔	2063	20	9.96	49.81	-0.79	0.78	-0.02	0.09	greater	2018	🌍	✔	Dechamps et al., 2021
Priming 2 Con	✖	2063	20	10.02	50.08	0.32	0.38	0.01	0.22	greater	2018	🌍	✔	Dechamps et al., 2021
Priming 3 Exp	✔	6099	20	9.96	49.82	-1.21	0.89	-0.02	0.04	greater	2019	🌍	✔	Dechamps et al., 2021
Priming 3 Con	✖	6099	20	9.97	49.83	-1.15	0.88	-0.01	0.04	greater	2019	🌍	✔	Dechamps et al., 2021
Priming 4 Exp	✔	4060	20	10.00	49.98	-0.13	0.55	0.00	0.10	greater	2020	🌍	✔	Dechamps et al., 2021
Priming 4 Con	✖	4060	20	9.90	49.52	-2.69	1	-0.04	0.02	greater	2020	🌍	✔	Dechamps et al., 2021
Smokers Priming Exp	✔	38	20	10.03	50.13	0.08	0.47	0.01	0.68	greater	2021	🏠	✖	–
Smokers Priming Con	✖	38	20	10.05	50.26	0.13	0.45	0.02	0.69	greater	2021	🏠	✖	–
Sobjectivity 1	✖	898	20	9.99	49.95	-0.14	0.55	0.00	0.22	greater	2021	🌍	✔	Maier et al., 2022
Sobjectivity 2	✖	986	20	9.90	49.52	-1.32	0.91	-0.04	0.11	greater	2021	🌍	✔	Maier et al., 2022
Epsi Correlation Condition A	✖	2052	20	9.96	49.81	-0.75	0.77	-0.02	0.10	greater	2021	🌍	✔	Maier & Dechamps, 2022
Epsi Correlation Condition B	✖	2052	20	9.94	49.72	-1.14	0.87	-0.03	0.08	greater	2021	🌍	✔	Maier & Dechamps, 2022
Sobjectivity 3	✖	1503	20	9.99	49.97	-0.12	0.55	0.00	0.18	greater	2023	🌍	✔	submitted
Robots	✔	34	10	5.29	52.94	1.03	0.15	0.18	1.18	greater	2023	🌍	✖	–
Games	✔	205	1-6	0.91	50.82	0.16	0.44	0.01	0.47	greater	2023	🌍	✖	–
Schrödingers Cat Hope	✔	285	10	4.83	48.32	-1.78	0.96	-0.11	0.16	greater	2023	🌍	✖	–
Schrödingers Cat Baseline	✔	285	10	5.08	50.84	0.90	0.19	0.05	0.78	greater	2023	🌍	✖	–
Desire	✔	201	10	5.01	50.15	0.13	0.45	0.01	0.47	greater	2023	🌍	✖	–
Stories	✔	766	1	0.51	50.65	0.36	0.36	0.01	0.35	greater	2023	🌍	✖	–
Willpower	✔	703	20	9.98	49.92	-0.18	0.57	-0.01	0.24	greater	2023	🌍	✖	–
Baseline 1 Lucky	✔	801	20	11.80	50.84	-2.67	0	-0.09	10.87	less	2024	🌍	✖	in press
Baseline 1 Unlucky	✔	725	20	8.00	50.00	0.00	0.5	0.00	0.27	greater	2024	🌍	✖	in press
Baseline 2	✔	2094	20	12.02	49.93	0.37	0.64	0.01	0.13	less	2024	🌍	✔	in preparation

General Information

Generation of Randomness

When not specified otherwise, we used a quantum-based random number generator (qRNG) Quantis by idquantique to generate true randomness and coupled the outcome of these random events to the display of relevant stimulus material. A micro-Pk effect should result in a (temporary; see change of evidence) biasing of the qRNG outcome corresponding to the presentation of more or less of the relevant stimuli.

Online Studies

If an experiment is classified as an online study, it was set up with the software jsPsych (Leeuw et al., 2023) and running on a dedicated web server in the departments IT infrastructure. A qRNG is directly connected to the web server via USB and provides random events without a buffer.

Procedural Details

Please refer to the experimental programs attached to the resources of each study for all procedural details, like stimulus presentation timings, questionnaires, etc. where not specified explicitly.

Preregistration

The column Prereg. shows whether a study was preregistered. A check mark links to the registration. Two early lab studies (Loving Kind and One-armed Bandit) were preregistered internally for training purposes, which is marked as internal and links to the document. Studies conducted in empirical courses may have been preregistered as a course exercise; these preregistrations are not available and the studies are listed as not preregistered.

References

Leeuw, J. R. de, Gilbert, R. A., & Luchterhandt, B. (2023). jsPsych: Enabling an open-source collaborative ecosystem of behavioral experiments. Journal of Open Source Software, 8(85), 5351. https://doi.org/10.21105/joss.05351