Bayesian Statistics: What is it and Why do we Need it?

prlipohellThere is a revolution in statistics happening: The Bayesian revolution. Psychology students who are interested in research methods (which I hope everyone is!) should know what this revolution is about. Gaining this knowledge now instead of later might spare you lots of misconceptions about statistics as it is usually instructed in psychology, and it might help you gain a deeper understanding of the foundations of statistics. To make sure that you can try out everything you learn immediately, I conducted analysis in the free statistics software R (; click HERE for a tutorial how to get started with R, and install RStudio for an enhanced R-experience) and I provide the syntax for the analysis directly in the article so you can easily try them out. So let’s jump in: What is “Bayesian Statistics”, and why do we need it? Continue reading

Interview with Prof. David Barlow

Prof. Barlow is a professor of Psychology and Psychiatry at Boston University and founder of  Center for Anxiety and Related Disorders. His research focuses on understanding the nature of anxiety and depression and developing new treatments for emotional disorders. He also developed the Transdiagnostic Treatment of Emotional Disorders david.barlow

What I enjoy most about my job as a researcher …  What I learned very early is that there is nothing I do not enjoy about my job! Continue reading

Crowdsource your research with style

Would you like to collect data quick and efficiently? Would you like to have a sample that generalizes beyond western, educated, industrialized, rich and democratic participants? While you acknowledge social media as a powerful means to distribute your studies, you feel that there must be a “better way”? Then this practical introduction to crowdsourcing is exactly what you need. I will show you how to use Crowdflower, a crowdsourcing platform to attract participants from all over the world to take part in your experiments. However, before we get too excited, let’s quickly go through the relevant terminology. Continue reading

Interview with Prof. Nelson Cowan

Nelson Cowan is a Curators’ Professor of Psychology at the University of Missouri. His research focuses on short-term memory, working memory and selective attention in information processing. Amongst other findings, Cowan is well known for bringing the working memory capacity down from Millers magical 7+/-2 items to a more realistic 3-4 items. cowan_new

What I enjoy most about my job as a researcher … I enjoy the ability to decide what aspect of the human mind to investigate, and how to investigate it.  Continue reading

Interview with Dr. David Klemanski

David Klemanski is Director of the Yale Center for Anxiety and Mood Disorders and lecturer of Psychology and Psychiatry. His research interests include mood and anxiety disorders (e.g., social phobia, generalised anxiety disorder, PTSD) in adolescents. His recent research focuses on individual differences in emotion regulation strategies. droppedImage_1

What I enjoy most about my job as a researcher … On a professional level, I most enjoy the opportunity to contribute to a wider area of knowledge in psychological science.  Continue reading

Interview with Prof. Daniel Simons

Daniel Simons is Professor of Psychology at the University of Illinois. His lab does research on visual cognition, attention, perception, memory, change blindness, metacognition and intuition. He is especially well known for his experiments on inattentional blindness, e.g. the famous invisible gorilla experiment.


What I enjoy most about my job as a researcher … I get the most enjoyment from analyzing new data to see what we found. That moment when you learn what you found continues to be rewarding no matter how many studies you’ve done. I also enjoy writing and editing. There are few aspects of the research process I don’t like, actually. Continue reading

Interview with Prof. Ralph Hertwig

Ralph Hertwig is director of the Center for Adaptive Rationality at the Max Planck Institute for Human Development in Berlin. He is well known for his interdisciplinary research on cognitive search, judgment, and decision making under risk and uncertainty. To this end, his lab uses a wide array of methods, ranging from experiments, surveys, and computer simulations to neuroscientific tools. 

Ralph Hertwig

What I enjoy most about my job as a researcher … What I most enjoy is the opportunity to team up with people from other fields or schools of thought and produce something I could never have come up with on my own. Continue reading

Interview with Prof. Steven Luck

Steven J. Luck is Professor of Psychology and the Director of the Center for Mind & Brain at the University of California, Davis. Dr. Luck is known for his research on the neural and cognitive mechanisms of attention and working memory in healthy young adults and dysfunctions of attention and working memory in psychiatric and neurological disorders. He is also a leading authority on ERP research and leads ERP Boot Camps.


What I enjoy most about my job as a researcher … What I enjoy most is designing experiments.  We can’t see or touch the human mind, so it is a great challenge to figure out creative ways of testing hypotheses about cognitive processes.   Continue reading

Interview with Prof. Daniel Gilbert

Daniel T. Gilbert is Professor of Psychology at Harvard University. He is a social psychologist known for his research on affective forcasting, with a special emphasis on cognitive biases such as impact bias. He is the author of the international bestseller Stumbling on Happiness, which has been translated into more than 25 languages. He is also very well known for his TED talks, which were watched over 10 million times.


What I enjoy most about my job as a researcher … is working with my collaborators, who range from undergraduates to full professors. Spending your life exploring ideas is a pleasure, but spending your life exploring them with friends is a joy. Continue reading

Ethics – The Science of Morals, Rules and Behaviour


ethicsEthical boards are in place to evaluate the ethical feasibility of a study by weighing the possible negative effects against the possible positive effects of the research project (Barret, 2006). When designing your research project, it could be that you need to apply for ethical approval. This is a challenging task as there are strict guidelines to abide to when drawing up a proposal. This is where your supervisor can help – with their experience, they have a clear idea of what would be accepted for someone applying for ethical approval for an undergraduate or master study. There is a great importance to abiding by ethics, in research and in practice.The importance lies in the fact that care is taken for the participant, researcher and wider society. It creates a filter for good standard of research with as minimal harm being done as possible. Continue reading