public boolean recallWord(Word w){
		if (w == null) {
			return false;
		}
		else if (useProbMem) {
			// Probabilistically look up the word
			return probMemRecallRate(w.getScore(time)) > rand.nextDouble();
		}
		else {
			// Return just whether the word has a positive score
			return w.getScore(time) > 0;
		}
	}