Why is 'attention' ('manasikara') included within 'nama-rupa'?

In respect to Dependent Origination, the Pali suttas state: > *Vedanā, saññā, cetanā, phasso, **manasikāro** - idaṃ vuccatāvuso nāmaṃ. Cattāri ca mahābhūtāni catunnañca mahābhūtānaṃ upādāya rūpaṃ. Idaṃ > vuccatāvuso rūpaṃ. Iti idañca nāmaṃ idañca rūpaṃ - idaṃ vuccatāvuso > nāmarūpaṃ.* > > *Feeling, perception, volition, contact and **attention** — these are called mentality. The four great elements and the material form > derived from the four great elements — these are called materiality.* Alternate translation: > *Feeling, perception, intention, contact & **attention**: This is called name. The four great elements and the form dependent on the four great > elements: This is called form. This name & this form are called > name-&-form.* Why do we think 'attention' ('manasikara') is included within 'nama-rupa'? _________________________________________________________________ *Note: I personally do not have a definite answer to this question, apart from personal speculation therefore I have asked the question for people to think about & answer.*