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Koen Raijer

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Personal website of Koen Raijer. Psychiatry resident and amateur programmer who dabbles in writing. Mostly about mind-stuff and technology.

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Individuele Digitale Soevereiniteit

Over het belang digitale onafhankelijkheid en weerbaarheid in veranderende tijden. Een concrete gids over hoe je je kunt loskoppelen van (Amerikaanse) techreuzen. Geen technische kennis vereist.

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Tinkering with the PineTime smartwatch

Learn how to edit the InfiniTime firmware and flash it to the PineTime using the NRFConnect app for iOS and Android. Perfect for beginners interested in tinkering with their PineTime.

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Mental disorders as symptom networks

Introduction to a network-based view on psychopathology inspired by Eiko Fried.

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Thoughts on falsificationism

Me misunderstanding falsificationism, a Gwern quote, the philosopause, and more.

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Literature review automation

A practical guide to conducting literature reviews in 2025, showing how to use PRISMA, OSF, ASReview, Zotero, and Google Drive to streamline research workflows. Learn how to handle everything from preregistration and search strategies to automated screening and data extraction, with tips for reducing errors and maintaining quality. Written for researchers working on systematic or scoping reviews, with detailed setup instructions and real examples from firsthand experience.

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Experience sampling self-experimentation

I tracked my emotions using the circumplex model of affect for three months, multiple times a day. In this post, I will share how I chose the right tool for the job, what questions I asked myself and why, challenges I encountered, and potential improvements I discovered.

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arXivCollector

Export arXiv searches as neatly formatted BibTex files.

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Recensie: Het duizend eilanden experiment

Een boekrecensie van Frank van Dongens sciencefictionroman: Het duizend eilanden experiment.

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From Pocketbook notes to markdown

This post uses a simple script based on BeautifulSoup to convert Pocketbook notes, which are in HTML format, to Obsidian-flavoured markdown with YAML frontmatter.

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DIY Anki Remote for iPhone

Setting up an Anki Remote using nothing but your iPhone (only for iOS)

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Practical Weight Training Guide

A flexible and efficient, science-based full-body weight training program for busy people who seek long-term health, based on my own training experience, medical background, and knowledge of scientific literature.

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Zotero-Obsidian Quick Copy

External translator to improve integration between Obsidian and Zotero.

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Three Months in a South African Public Hospital

I spent three months working in a rural hospital in Limpopo, the poorest province of South Africa.

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Motivational Interviewing

A brief guide to creating sustainable behavioral change.

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Zijn alle zwarte scenario's gelijk?

Door maatregelen om de ziekenhuiszorg te ontlasten stroomt de jeugd-ggz over, terwijl ic’s bij absolute schaarste voorrang geven aan kinderen. Die eenzijdige focus op ic-bezetting is onrechtvaardig.