How to be an Alarmist
Let me count the ways
Posted on 17 Apr 26
by John RidgwayIn Uncategorized
It is a widely held view that the term ‘alarmist’ is a discriminatory label that is every bit as divisive and dismissive as ‘denier’. This would, of course, be a convenient view for an alarmist to hold since it provides a pretext for rejecting the label, thereby avoiding discussion of the term’s legitimate application. In fact, fussing over the use of supposedly essentialist labels that support tribalism is a good way of neatly evading two inconvenient truths. Firstly, being accused of holding an unjustified perception of high risk (alarmism) is nowhere near as pathologizing as being accused of an inability to accept self-evident facts (denialism). The former accusation simply questions an individual’s judgment and challenges the accused to produce a better justification; the latter is used to disqualify the accused from further debate since the acceptance of self-evident facts by all parties is a prerequisite for rational argument. Secondly, alarmism can be a worrying consequence of a number of procedural and methodological strategies and errors, and these need to be acknowledged and assessed. Carping about supposedly pejorative terms, and using a taken offence as an excuse to walk away from the discussion leaves such issues unexplored.
Well, today I want to explore those issues. In so doing, I will demonstrate that, far from being a pathologizing slur, the epithet of alarmist is often a perfectly legitimate and technically correct label that helps illuminate the debate rather than close it down. So, without further delay, here are the various technical considerations that can form the basis for pathology-free accusations of alarmism.
The Signal Detection Theory (SDT) perspective
SDT is relevant to the study of alarmism because it provides a formal basis for determining an individual’s propensity to distinguish a significant signal from background noise. As such, it is a branch of psychology that connects with decision theory by drawing a distinction between a tendency to make false alarms (alarmism) and a tendency to overlook important indicators (complacency). The classic SDT diagram that illustrates the distinction is shown in Fig 1.
Fig 1. In a threat scenario, Type 1 errors are precautionary false alarms and Type 2 errors are failures to detect the threat.
Fig 1 shows two overlapping probability distributions, one for the noise (the null hypothesis) and the other for the signal (the alternative hypothesis). A ‘critical value’ has been set to define the threshold demarking which hypothesis is accepted. This is a useful representation because it highlights an important point: for any given choice of ‘critical value’, there are two basic categories of error that can be made.
https://cliscep.com/2026/04/17/how-to-be-an-alarmist/
