diff --git a/java/src/com/android/inputmethod/research/ResearchLogger.java b/java/src/com/android/inputmethod/research/ResearchLogger.java
index e8c3bdf812cbbf5ed6c99e9c1a520e6e763ae52b..6bda3a447ea29d260738483f3afb20b14023b5c2 100644
--- a/java/src/com/android/inputmethod/research/ResearchLogger.java
+++ b/java/src/com/android/inputmethod/research/ResearchLogger.java
@@ -1157,7 +1157,7 @@ public class ResearchLogger implements SharedPreferences.OnSharedPreferenceChang
                 suggestion == null ? null : scrubbedWord, Constants.SUGGESTION_STRIP_COORDINATE,
                 Constants.SUGGESTION_STRIP_COORDINATE);
         researchLogger.commitCurrentLogUnitAsWord(scrubbedWord, Long.MAX_VALUE, isBatchMode);
-        researchLogger.mStatistics.recordManualSuggestion();
+        researchLogger.mStatistics.recordManualSuggestion(SystemClock.uptimeMillis());
     }
 
     /**
@@ -1295,7 +1295,7 @@ public class ResearchLogger implements SharedPreferences.OnSharedPreferenceChang
         }
         researchLogger.enqueueEvent(logUnit != null ? logUnit : researchLogger.mCurrentLogUnit,
                 LOGSTATEMENT_LATINIME_REVERTCOMMIT, committedWord, originallyTypedWord);
-        researchLogger.mStatistics.recordRevertCommit();
+        researchLogger.mStatistics.recordRevertCommit(SystemClock.uptimeMillis());
         researchLogger.commitCurrentLogUnitAsWord(originallyTypedWord, Long.MAX_VALUE, isBatchMode);
     }
 
@@ -1625,7 +1625,8 @@ public class ResearchLogger implements SharedPreferences.OnSharedPreferenceChang
         final ResearchLogger researchLogger = getInstance();
         researchLogger.enqueueEvent(LOGSTATEMENT_LATINIME_ONENDBATCHINPUT, enteredText,
                 enteredWordPos);
-        researchLogger.mStatistics.recordGestureInput(enteredText.length());
+        researchLogger.mStatistics.recordGestureInput(enteredText.length(),
+                SystemClock.uptimeMillis());
     }
 
     /**
@@ -1638,7 +1639,20 @@ public class ResearchLogger implements SharedPreferences.OnSharedPreferenceChang
     public static void latinIME_handleBackspace_batch(final CharSequence deletedText) {
         final ResearchLogger researchLogger = getInstance();
         researchLogger.enqueueEvent(LOGSTATEMENT_LATINIME_HANDLEBACKSPACE_BATCH, deletedText);
-        researchLogger.mStatistics.recordGestureDelete();
+        researchLogger.mStatistics.recordGestureDelete(deletedText.length(),
+                SystemClock.uptimeMillis());
+    }
+
+    /**
+     * Log a long interval between user operation.
+     *
+     * UserInput: The user has not done anything for a while.
+     */
+    private static final LogStatement LOGSTATEMENT_ONUSERPAUSE = new LogStatement("OnUserPause",
+            false, false, "intervalInMs");
+    public static void onUserPause(final long interval) {
+        final ResearchLogger researchLogger = getInstance();
+        researchLogger.enqueueEvent(LOGSTATEMENT_ONUSERPAUSE, interval);
     }
 
     public static void latinIME_handleSeparator() {
diff --git a/java/src/com/android/inputmethod/research/Statistics.java b/java/src/com/android/inputmethod/research/Statistics.java
index e9c02c919ff0f944dc820a8ecc0346cf88c563a0..a9202651eeaefe7b5741cdb07e6f8384d8eba327 100644
--- a/java/src/com/android/inputmethod/research/Statistics.java
+++ b/java/src/com/android/inputmethod/research/Statistics.java
@@ -134,17 +134,9 @@ public class Statistics {
         if (DEBUG) {
             Log.d(TAG, "recordChar() called");
         }
-        final long delta = time - mLastTapTime;
         if (codePoint == Constants.CODE_DELETE) {
             mDeleteKeyCount++;
-            if (delta < MIN_DELETION_INTERMISSION) {
-                if (mIsLastKeyDeleteKey) {
-                    mDuringRepeatedDeleteKeysCounter.add(delta);
-                } else {
-                    mBeforeDeleteKeyCounter.add(delta);
-                }
-            }
-            mIsLastKeyDeleteKey = true;
+            recordUserAction(time, true /* isDeletion */);
         } else {
             mCharCount++;
             if (Character.isDigit(codePoint)) {
@@ -156,14 +148,8 @@ public class Statistics {
             if (Character.isSpaceChar(codePoint)) {
                 mSpaceCount++;
             }
-            if (mIsLastKeyDeleteKey && delta < MIN_DELETION_INTERMISSION) {
-                mAfterDeleteKeyCounter.add(delta);
-            } else if (!mIsLastKeyDeleteKey && delta < MIN_TYPING_INTERMISSION) {
-                mKeyCounter.add(delta);
-            }
-            mIsLastKeyDeleteKey = false;
+            recordUserAction(time, false /* isDeletion */);
         }
-        mLastTapTime = time;
     }
 
     public void recordWordEntered(final boolean isDictionaryWord) {
@@ -177,9 +163,10 @@ public class Statistics {
         mSplitWordsCount++;
     }
 
-    public void recordGestureInput(final int numCharsEntered) {
+    public void recordGestureInput(final int numCharsEntered, final long time) {
         mGesturesInputCount++;
         mGesturesCharsCount += numCharsEntered;
+        recordUserAction(time, false /* isDeletion */);
     }
 
     public void setIsEmptyUponStarting(final boolean isEmpty) {
@@ -187,14 +174,43 @@ public class Statistics {
         mIsEmptinessStateKnown = true;
     }
 
-    public void recordGestureDelete() {
+    public void recordGestureDelete(final int length, final long time) {
         mGesturesDeletedCount++;
+        recordUserAction(time, true /* isDeletion */);
     }
-    public void recordManualSuggestion() {
+
+    public void recordManualSuggestion(final long time) {
         mManualSuggestionsCount++;
+        recordUserAction(time, false /* isDeletion */);
     }
 
-    public void recordRevertCommit() {
+    public void recordRevertCommit(final long time) {
         mRevertCommitsCount++;
+        recordUserAction(time, true /* isDeletion */);
+    }
+
+    private void recordUserAction(final long time, final boolean isDeletion) {
+        final long delta = time - mLastTapTime;
+        if (isDeletion) {
+            if (delta < MIN_DELETION_INTERMISSION) {
+                if (mIsLastKeyDeleteKey) {
+                    mDuringRepeatedDeleteKeysCounter.add(delta);
+                } else {
+                    mBeforeDeleteKeyCounter.add(delta);
+                }
+            } else {
+                ResearchLogger.onUserPause(delta);
+            }
+        } else {
+            if (mIsLastKeyDeleteKey && delta < MIN_DELETION_INTERMISSION) {
+                mAfterDeleteKeyCounter.add(delta);
+            } else if (!mIsLastKeyDeleteKey && delta < MIN_TYPING_INTERMISSION) {
+                mKeyCounter.add(delta);
+            } else {
+                ResearchLogger.onUserPause(delta);
+            }
+        }
+        mIsLastKeyDeleteKey = isDeletion;
+        mLastTapTime = time;
     }
 }