Positive Bias in the 2-4-6 Task

The boy's expression grew more intense. "This is a game based on a famous experiment called the 2-4-6 task, and this is how it works. I have a rule - known to me, but not to you - which fits some triplets of three numbers, but not others. 2-4-6 is one example of a triplet which fits the rule. In fact... let me write down the rule, just so you know it's a fixed rule, and fold it up and give it to you. Please don't look, since I infer from earlier that you can read upside-down." The boy said ...

 The General Oblation Board

“Oh, yes,” said Lyra. “I’m safe from everyone here. Where I used to live, in Oxford, there was all kinds of dangerous things. There was gyptiansthey take kids and sell ‘em to the Turks for slaves. And on Port Meadow at the full moon there’s a werewolf that comes out from the old nunnery at Godstow. I heard him howling once. And there’s the Gobblers….” “That’s what I mean,” the man said. “That’s what they call the Oblation Board, don’t they?” Lyra felt Pantala...