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Correlational findings

Study Langer & Rodin (1976): study US 1973

Public:
Nursing home residents, Hamden, Connecticut, USA, 1973
Sample:
Respondents:
N = 45
Non Response:
51%
Assessment:
Behavioural observation
Observation and rating by staff

Correlate

Authors's label
Boosting of responsibility and choice
Our Classification
Operationalization
In nursing home two floors selected because of similarity in residents' characteristics. A different floor was randomly selected for each treatment. The nursing home administrator called a meeting in the lounge of each floor where she delivered two communications. 0 Comparison group: 2nd floor, the
  administrator stressed staff
  responsibility
1 Experimental group: 4th floor, the
  administrator emphasized respondents
  responsibility for themselves

Happiness was assessed 1 week prior to the communication (T1) and 3 weeks after (T2).

Observed Relation with Happiness

Happiness Measure Statistics Elaboration / Remarks O-HL-g-sq-n-8-a DMt = + p < .05 Mean happiness (Mt) pre and post treatment.
                     T1      T2      CHANGE
-Experiment       :  6.31    6.65    + 0.34
-Comparison group :  5.99    5.84    - 0.15

The difference in change was significant at  05 level.