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	1.	A neglected window on hypothesis testing in adolescence: explicit standard order conditional selection tasks. [electronic resource] by Langford, P E Producer: 19990414 In: Psychological reports vol. 83 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	Evaluation strategies for some nonstandard conditionals during adolescence. [electronic resource] by Langford, P E Producer: 19920708 In: Psychological reports vol. 70 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	3.	Obligation conditionals in a nonstandard conditional selection task: general versus specific reasoning strategies as a false dichotomy. [electronic resource] by Langford, P E Producer: 20010419 In: Psychological reports vol. 87 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	4.	Evaluation of conditional and biconditional hypotheses in information-use tasks during adolescence. [electronic resource] by Langford, P E Producer: 19930817 In: The Journal of genetic psychology vol. 154 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	5.	Pregnancy-block in the meadow vole, Microtus pennsylvanicus. [electronic resource] by Clulow, F V Langford, P E Producer: 19710526 In: Journal of reproduction and fertility vol. 24 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)