not just the laughter that’s important. It’s similar intensities—the evidence of a desire to connect—that is critical. If someone gives a half-hearted chuckle while we are doubled over with laughter, we’re likely to sense their tepid enthusiasm and see it as a hint we’re not aligned, “a signal of dominance/submission or acceptance/rejection,” as Provine wrote. If we chuckle only slightly at someone’s joke, while they laugh uproariously, we’ll both see it as a sign that we’re not in sync—or, worse, that one of us is trying too hard, or the other is not trying hard enough.