Per-Olof H Wikström, FBA
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powikstrom.bsky.social
Per-Olof H Wikström, FBA
@powikstrom.bsky.social
Professor Emeritus University of Cambridge. Professor Malmö universitet. Situational Action Theory (SAT) its development, testing and policy & prevention application.

Short Bio; https://www.crim.cam.ac.uk/People/professor-per-olof-wikstrom
September 20, 2025 at 9:14 AM
Spent the week teaching and meeting with colleagues at Malmö University. An intense but rewarding week.
Celebrated with a well-deserved princess cake at Emporia!
September 11, 2025 at 5:28 PM
This was the theme of one of the first ASC conferences I attended and I guess it has stuck with me ever since.
August 31, 2025 at 12:20 PM
Time for a new wave of PADS+ data collection. Visiting the PADS+ office meeting Kyle and Beth, and our new research assistants (Katie, Rhianna, Giulia) who will be doing the most important job interviewing the participants. And of course it was time for a coffee!
August 29, 2025 at 12:18 PM
New study by Andrzej Uhl and Beth Hardie, studying CORRUPTION with Polish data, informed by Situational Action Theory

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August 12, 2025 at 2:27 PM
Enjoyable concert at the O2. One of the many perks living in a commuting distance to London and it’s rich cultural life.
July 20, 2025 at 8:12 AM
Study abstract
July 7, 2025 at 8:53 AM
Wishing everyone a happy summer and many good readings! There is in my view nothing better than a coffee and a good book.
July 1, 2025 at 8:34 AM
June 19, 2025 at 10:40 AM
Spent an enjoyable day teaching at the ESC summer school. Meeting some of the criminologists of the future (and Fernando and Marcelo)
June 14, 2025 at 4:22 AM
Congratulations to Dr Kyle Treiber that just has been appointed Professor at the University of Cambridge. Such a brilliant mind. It is a particular pleasure to see your former PhD students do well.
June 12, 2025 at 3:39 PM
Enjoying a break in the Spanish sun and some very good books. Carruthers's just published book makes a good argument that philosophical treatments of action theory would benefit from taking better into account cognitive sciences, and, among other things, the role of habits.
May 19, 2025 at 1:19 PM
Enjoying Tea and Scones at the Orchard. One of many classic and lovely spots in Cambridge.
May 2, 2025 at 1:22 PM
WONDERFUL to see BRYNÄS ready for the finals. Lucky that at least there is an English pay channel that shows matches from the SHL. Brings back wonderful childhood memories from my short ‘career' in Brynäs boys' team 3 😂
As they say.
Once Brynäs, always Brynäs!
April 12, 2025 at 8:56 PM
Interview I did with Kurir, a leading Austrian newspaper
Enjoyed talking to this excellent journalist on crime and its prevention
April 1, 2025 at 4:57 PM
March 29, 2025 at 11:09 AM
Just published SAT inspired paper by Saeed Kabiri in Journal of Criminal Justice:
Hunting in the digital jungle:
Exploring cyberstalking with higher order moderation in situational action theory.
March 25, 2025 at 3:29 PM
Spent a few days in Vienna, one of my favourite cities
Gave a talk at the University of Applied Science on the causes of crime and its prevention. Had interesting discussions with policy-makers; a weissbier, a lovely Vivaldi church concert, a Sacher cake, and a visit to Albertina
March 23, 2025 at 2:20 PM
The PADS+ cohort is now in their mid 30s. We did the first data collection at their age of 12, interviewing their parents, including collecting
retrospective data about their children from birth. The main findings from the study so far has been published in two books
March 7, 2025 at 3:49 PM
Time to become a 'grey eminence'😂
The succession of the PADS+ study is in full swing, 'the three musketeers', the highly
experienced and skilful team of Beth Hardie, Gabriela Roman and Kyle Treiber, under Kyle's
leadership, is just in the process of recruiting the fieldworkers
March 7, 2025 at 3:47 PM
Coincidently, I just received this book by Newburn and Ward that has a large section on smoking so perhaps? I will instantly be proven wrong. Look forward to read this one!
February 28, 2025 at 10:38 PM
Understanding the mechanisms of change in moral norms and its behavioural effects are crucial knowledge for crime prevention policy and practise. I have not seen any in-depth analysis of the changing moral norms of smoking and its drivers but that may just be due to my ignorance?
February 28, 2025 at 1:56 PM
separately for the identified three major TRAJECTORY GROUPS
(Infrequent, adolescence-limited, persistent) shows that the matching of trends in each group is still close.
For statistical analyses and details see ch 8 in Character, Circumstances and Criminal Careers
February 27, 2025 at 10:32 AM
EXPLAINING THE AGE AND CRIME DISTRIBUTION. In our PADS+ data that age-crime distribution rather closely match trends in young peoples crime propensity and criminogenic exposure. Even more interesting is that analysing this..,
February 27, 2025 at 10:31 AM
ABSTRACT
February 26, 2025 at 6:00 PM