Boundedness: a unit that depends on the length of the foot. If there is a pattern in the stress. So, you can deduce which stress is primary and which is secondary as long as there are at least three stressed syllables. Direction: whether there is a limit to ho big your feet are. Look at where stress can and can"t pop up. It is always assumed that there is a direction. Headedness: headedness within the word or within a foot. Right-headed if the right head is the primary stress. Left-headed if the left head is the primary stress. When observing stress in a word, you have to check off the following criteria: The feet are not bounded because there are no size restrictions. Based on what we know, we cannot tell the difference between, say: Where the last syllable (same one) is stressed. It all sounds the same to us and it makes no difference in how we say it.