56 research outputs found
Sustained Effects of Incredible Years as a Preventive Intervention in Preschool Children with Conduct Problems
The present study evaluated preventive effects of the Incredible Years program for parents of preschool children who were at risk for a chronic pattern of conduct problems, in the Netherlands. In a matched control design, 72 parents of children with conduct problems received the Incredible Years program. These families (intervention group) were compared with 72 families who received care as usual (control group). Two years after termination of the intervention, it appeared that observed and selfrated parenting skills were significantly improved in the intervention group. Likewise, in this group, observed child conduct problems showed sustained intervention effects. The decrease in observed critical parenting mediated the decrease in observed child conduct problems over time. In addition, it appeared that parental influence increased over time
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Measurement of the branching fraction ratios and CP asymmetries in B-→ D0 CP K-decays
We present a preliminary study of and decays, with the reconstructed in the CP-odd
eigenstates , , in the CP-even eigenstates ,
, and in the (non-CP) flavor eigenstate . Using a
sample of about 382 million Y(4S) decays into BBbar pairs, collected with the
BABAR detector operating at the PEP-II asymmetric-energy B Factory at SLAC, we
measure the ratios of the branching fractions R_CP+- and the direct CP
asymmetries A_CP+-. The results are:
R_CP- = 0.81 \pm 0.10 (stat) \pm 0.05 (syst)
R_CP+ = 1.07 \pm 0.10 (stat) \pm 0.04 (syst)
A_CP- = -0.19 \pm 0.12 (stat) \pm 0.02 (syst)
A_CP+ = 0.35 \pm 0.09 (stat) \pm 0.05 (syst
Observation of electric quadrupole transitions to Rydberg nd states of ultracold rubidium atoms
We report the observation of dipole-forbidden, but quadrupole-allowed, one-photon transitions to high-Rydberg states in Rb. Using pulsed uv excitation of ultracold atoms in a magneto-optical trap, we excite 5s¿nd transitions over a range of principal quantum numbers n=27–59. Compared to dipole-allowed (E1) transitions from 5s¿np, these E2 transitions are weaker by a factor of approximately 2000. We also report measurements of the anomalous np3/2:np1/2 fine-structure transition strength ratio for n=28–75. Both results are in agreement with theoretical predictions
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