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PsychBrief

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  • Growth mindset fails to increase grades or non-cognitive skills. What now?

    Growth mindset fails to increase grades or non-cognitive skills. What now?

    Growth mindset is a popular classroom intervention which attempts to change children’s views towards studying and class work. The core principle is teaching students their brain has the potential to grow by exerting mental effort during challenging tasks. This will increase the pupil’s willingness to persevere with work, and will subsequently improve their grades (Dweck, […]

    PsychBrief

    July 23, 2019
    Education
    Academic achievement, Classroom, Debate, Replication
  • Who & what do methods blogs talk about? Reviewing Nicolas et al. (2019)

    My blog feed for psychological methods blogs was the subject of a recent paper [zotpressInText item=”{5421944:VIVBL9IA}”][note]Open access version available here and code and data available here.[/note]. The paper was a quantitative analysis of the content of these blogs as of April 11th 2017. The primary purpose was to look at: who runs these blogs, what […]

    PsychBrief

    June 20, 2019
    Metascience
    Debate, Scientific culture
  • How to anonymise/pseudonymise your open data in R

    How to anonymise/pseudonymise your open data in R

    Anonymising data, especially if it includes personal details like addresses or voting patterns, is very important if you want to share your data or results. Due to GDPR, all data collected in the E.U. has to be either anonymised or pseudonymised when used in ways other than what was initially intended[note]The benefits of doing so […]

    PsychBrief

    May 29, 2019
    Metascience
    Methodology, Open science, R, Scientific culture
  • Should you analyse ordinal data like interval or ratio data?

    Should you analyse ordinal data like interval or ratio data?

    A couple of months ago, I wrote a summary of a recent paper arguing you shouldn’t analyse ordinal data like interval or ratio. If you do so, there’s a risk of inflated Type I and Type II error rates, as well as reduced power [zotpressInText item=”{VD8XETGZ}”][note]Open access version here[/note]. In response, Helen Wauck wrote a […]

    PsychBrief

    April 3, 2019
    Statistics
    Bayes, Data types, Debate, Models
  • Should you calculate a p-value when there isn’t randomisation?

    Should you calculate a p-value when there isn’t randomisation?

    The thought behind this question was prompted by reading [zotpressInText item=”{TIBTBKWD}” format=”%a% (%d%, %p%)”], which argues against frequentist inferential statistics. One of the arguments refers to an underlying assumption required to compute p-values; they need random sampling. Without this, a p-value is meaningless. But this is rare in social science research [zotpressInText item=”{VRZPC486}” format=”%a% (%d%, […]

    PsychBrief

    January 29, 2019
    Statistics
    Debate, NHST, Probability, Scientific culture
  • Year in Review: 2018

    Being a reflective practitioner is highly encouraged in my profession. We are always being asked to think back on an activity or our work, critique ourselves and our practice, looking for areas of strength and weakness. It, therefore, felt natural to apply this to my blogging. What were the goals at the start of the […]

    PsychBrief

    December 29, 2018
    Home improvements
    SIPS 2019
  • Best reads of 2018

    Best reads of 2018

    These are some of the most interesting article I’ve read in 2018. They don’t have to have been published this year (many aren’t), the only criteria is I came across them this year. Hopefully you find some of them interesting! Coding ‘Why Women in Psychology Can’t Program’ by Olivia Guest. A take-down of the idea […]

    PsychBrief

    December 20, 2018
    Best of
    Ability grouping, Academic achievement, Coding, Open science, Replication crisis, School, Theory
  • Do bilinguals enjoy enhanced executive functioning?

    Do bilinguals enjoy enhanced executive functioning?

    Many believe people who speak more than one language are smarter (just Google ‘bilingualism’ and ‘smarter’ and you’ll see many articles putting this idea forward). This popular meme arose due to a number of studies finding bilinguals scored higher on executive functioning (EF) tests compared to monolinguals [zotpressInText item=”{5421944:ZY8QPLW8}”]. Executive functioning is a broad concept […]

    PsychBrief

    November 30, 2018
    That’s not quite right…
    Cognitive psychology, Intelligence, Meta-analysis, Publication bias
  • The lazy person’s perspective on programming: why you should code

    The lazy person’s perspective on programming: why you should code

    Lots of people (myself included) bang on about coding. How great it is, how valuable it’s been, etc. You’re probably a bit bored of it. But if you’re not just yet, allow me to explain why it is probably a good idea for you to pick it up. Why am I uniquely qualified to do […]

    PsychBrief

    November 21, 2018
    Metascience, Statistics
    Coding, Open science, R, Scientific culture
  • You can’t assume a normal distribution for your data with N>30

    You can’t assume a normal distribution for your data with N>30

    The central limit theorem (CLT) is one of the most foundational concepts in all probability (Daly, 2013). It is commonly understood as: when the means of a variable with a suitable number of observations is plotted on a graph, it can form a normal distribution. When the data comes from many independent and random events, the sum […]

    PsychBrief

    October 25, 2018
    Statistics
    Distribution, Models, NHST
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