This is false!
Attitude does not have anything to do with effectiveness: it can relate to everything. One can have an attitude towards everything: other people, ideas, places, it basically means an opinion about something, a way of thinking about something.
A couple good questions would be: (assuming it's an experiment) Can it be redone with the same result and can the information being used be cited. Hope it helps!
States are denied certain powers under the Articles of Confederation. States may not send ambassadors to foreign countries, receive foreign ambassadors, or make any kind of arrangement, meeting or treaty with any king, prince or state. Not any person or state may accept any gift, including titles of nobility, from a foreign state.
Most likely, yes.
Different cultures value different ideas, different upbringings and have different value systems in general. All of these differences lead to different people in terms of their preferences and choices. Because all this exists, we can very safely say that a personal identity would also be different in a different culture.