Mae’n amlygu pan fydd ymddygiad yn aeddfedu/ It can be observed by matured behaviour

Mae ansawdd yn bwysicach na maint neu nifer/ It has a qualitative measure

Mae’n rhywbeth gydol oes, tan eich marwolaeth/ It is something that takes place till death

Mae am gyfnod cyfyngedig/ It is for a limited period

Ni chaiff hwn ei ddylanwadu gan ddysgu/ It is not affected by learning

Un agwedd o ddatblygiad ydyw/ It is one aspect of development

Nid yw’n bosib ei fesur/ It is not possible to measure

Mae'n cynnwys uchder, pwysau, maint a siâp organau’r corff/ It comprises of height, weight, size and shape of body organs

Mae'n cyfeirio at welliant mewn amgylchiadau/ It refers to an improvement in circumstances

Mae’n gallu cael ei fesur gyda cloriannau neu tâp mesur/ It can be measured with scales or a tape measure