1. “Observers” and Meta-Observers

   • Leo L. Gladin

   Article 20 May 2017 Pages: 229 - 239

2. Some aspects of human operant behavior

   • Donald H. Bullock

   Article 20 May 2017 Pages: 241 - 258

3. “Social-releaser mechanisms” in birds — A controlled replication of Tinbergen’s study

   • Malcolm A. McNiven

   Article 20 May 2017 Pages: 259 - 265

4. Rating of patients by mental hospital ward attendants

   • Herbert Gerjuoy
   • B. G. Rosenberg
   • James G. Bond

   Article 20 May 2017 Pages: 267 - 277

5. How to make an immie hole

   • Joseph Lyons

   Article 20 May 2017 Pages: 279 - 285

6. The effect of a pulsating magnetic field upon the behavior of mice

   • Willard Nelson
   • Melvin Neeley

   Article 20 May 2017 Pages: 287 - 289

7. Judgment of family resemblance as a function of consanguinity and social expectation

   • G. Y. Kenyon
   • Henry Winthrop

   Article 20 May 2017 Pages: 291 - 296

8. Reliability of content-free, group verbal behavior

   • Edwin O. Timmons
   • Henry C. Rickard
   • Robert E. Taylor

   OriginalPaper 20 May 2017 Pages: 297 - 305

9. Performance in brightness discrimination learning as a function of time of food deprivation (h)

   • Seymour H. Baron

   Article 20 May 2017 Pages: 307 - 316

10. Book Review

    • James D. Miller
    • Paul T. Mountjoy

    BookReview 20 May 2017 Pages: 317 - 318

11. Books received

    Announcement 20 May 2017 Pages: 327 - 328